backend: Tool config major refactoring

[tianjing-li]

Big tool refactor that removes a lot of friction/steps when creating or modifying a tool.

Notably:

• Change several tool schemas to better reflect their purpose
• Made tool config definition live in Tool's class
• Remove the need to maintain dictionary manually, only have to add tool implementation class to the Tool enum
• Above means that tool ID will need to be fetched with Tool.Google_Drive.value.ID for example
• Remove config settings to enable tools (in practice, this was not useful and just added a layer of confusion)

AI Description

This PR introduces a new Tool class and a ToolDefinition class, replacing the previous ToolName and ManagedTool classes. The Tool class is an enum that maps to the tool's main implementation class, while the ToolDefinition class provides a definition for each tool, including its name, display name, implementation, parameter definitions, and other attributes.

The PR also updates the get_available_tools function to return a dictionary of ToolDefinition objects, and modifies various files to use the new Tool and ToolDefinition classes instead of the old ToolName and ManagedTool classes.

• The ToolName class is replaced with the Tool class, which is an enum that maps to the tool's main implementation class.
• The ManagedTool class is replaced with the ToolDefinition class, which provides a definition for each tool, including its name, display name, implementation, parameter definitions, and other attributes.
• The get_available_tools function is updated to return a dictionary of ToolDefinition objects.
• Various files are modified to use the new Tool and ToolDefinition classes instead of the old ToolName and ManagedTool classes.
• The src/backend/config/configuration.template.yaml file is updated to remove the enabled_tools list and replace it with a dictionary of tool definitions.
• The src/backend/config/settings.py file is updated to remove the enabled_tools list and replace it with a dictionary of tool definitions.
• The src/backend/config/tools.py file is updated to remove the ToolName class and replace it with the Tool class, and to remove the ManagedTool class and replace it with the ToolDefinition class.
• The src/backend/main.py file is updated to import the logging module and set the log level for the pydantic module to ERROR.
• The src/backend/pytest.ini file is updated to add a filterwarnings line to ignore UserWarnings from the pydantic module.
• The src/backend/routers/auth.py file is updated to use the new Tool and ToolDefinition classes instead of the old ToolName and ManagedTool classes.
• The src/backend/routers/organization.py file is updated to use the new Tool and ToolDefinition classes instead of the old ToolName and ManagedTool classes.
• The src/backend/routers/tool.py file is updated to use the new Tool and ToolDefinition classes instead of the old ToolName and ManagedTool classes.
• The src/backend/schemas/tool.py file is updated to remove the Category class and replace it with the ToolCategory class, and to remove the ManagedTool class and replace it with the ToolDefinition class.
• The src/backend/services/auth/strategies/base.py file is updated to add a @classmethod decorator to the _post_init_check method.
• The src/backend/services/chat.py file is updated to use the new Tool and ToolDefinition classes instead of the old ToolName and ManagedTool classes.
• The src/backend/services/file.py file is updated to use the new Tool class instead of the old ToolName class.
• The src/backend/services/request_validators.py file is updated to use the new Tool and ToolDefinition classes instead of the old ToolName and ManagedTool classes.
• The src/backend/tests/integration/routers/test_agent.py file is updated to use the new Tool class instead of the old ToolName class.
• The src/backend/tests/unit/chat/test_tool_calls.py file is updated to use the new Tool and ToolDefinition classes instead of the old ToolName and ManagedTool classes.
• The src/backend/tests/unit/config/test_tools.py file is updated to use the new Tool class instead of the old ToolName class.
• The src/backend/tests/unit/configuration.yaml file is updated to remove the enabled_tools list and replace it with a dictionary of tool definitions.
• The src/backend/tests/unit/crud/test_agent.py file is updated to use the new Tool class instead of the old ToolName class.
• The src/backend/tests/unit/crud/test_agent_tool_metadata.py file is updated to use the new Tool class instead of the old ToolName class.
• The src/backend/tests/unit/crud/test_tool_auth.py file is updated to use the new Tool class instead of the old ToolName class.
• The src/backend/tests/unit/factories/agent.py file is updated to use the new Tool class instead of the old ToolName class.
• The src/backend/tests/unit/factories/agent_tool_metadata.py file is updated to use the new Tool class instead of the old ToolName class.

[codecov-commenter]

Codecov Report

Attention: Patch coverage is 87.77293% with 28 lines in your changes missing coverage. Please review.

Project coverage is 79.19%. Comparing base (e0af79f) to head (da0f42f).

Files with missing lines	Patch %	Lines
src/backend/tools/tavily_search.py	35.71%	9 Missing ⚠️
src/backend/routers/auth.py	16.66%	5 Missing ⚠️
src/backend/tests/unit/routers/test_chat.py	20.00%	4 Missing ⚠️
src/backend/chat/custom/custom.py	75.00%	1 Missing ⚠️
src/backend/cli/main.py	50.00%	1 Missing ⚠️
src/backend/services/auth/strategies/base.py	66.66%	1 Missing ⚠️
src/backend/services/chat.py	50.00%	1 Missing ⚠️
src/backend/services/file.py	0.00%	1 Missing ⚠️
src/backend/services/request_validators.py	75.00%	1 Missing ⚠️
src/backend/tools/base.py	94.44%	1 Missing ⚠️
... and 3 more

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #822      +/-   ##
==========================================
+ Coverage   79.14%   79.19%   +0.04%     
==========================================
  Files         250      250              
  Lines       10675    10723      +48     
==========================================
+ Hits         8449     8492      +43     
- Misses       2226     2231       +5     

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[EugeneLightsOn]

Looks good to me, there is just one small thing to change.