feat: add description field to connectors

[jvallesm]

Because

• Component page includes a short description of the component.

This commit

• Updates protogen-go to use the new description field in the connector
  entity in protobufs.
• Adds a description field in the connector definitions.

[linear]

INS-3809 fix: update README template for a consistent `description` field

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 62.18%. Comparing base (46c16b3) to head (043fcf6).

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #133   +/-   ##
=======================================
  Coverage   62.18%   62.18%           
=======================================
  Files          18       18           
  Lines        1489     1489           
=======================================
  Hits          926      926           
  Misses        440      440           
  Partials      123      123           

Flag	Coverage Δ
unittests	62.18% <ø> (ø)

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[jvallesm]

✅ QA

$ curl --request GET \
  --url "localhost:8080/vdp/v1beta/component-definitions?page_size=25" \
  --header 'accept: application/json' | jq '.component_definitions[] | if .type == "COMPONENT_TYPE_OPERATOR" then .operator_definition  else .connector_definition end | {name: .name, description: .description}'
  % Total    % Received % Xferd  Average Speed   Time    Time     Time  Current
                                 Dload  Upload   Total   Spent    Left  Speed
100 21212    0 21212    0     0   548k      0 --:--:-- --:--:-- --:--:--  559k
{
  "name": "connector-definitions/stability-ai",
  "description": "Connect the AI models served on the Stability AI Platform"
}
{
  "name": "connector-definitions/instill-model",
  "description": "Connect the AI models served on the Instill Model Platform"
}
{
  "name": "connector-definitions/hugging-face",
  "description": "Connect the AI models served on the Hugging Face Platform"
}
{
  "name": "connector-definitions/openai",
  "description": "Connect the AI models served on the OpenAI Platform"
}
{
  "name": "connector-definitions/archetype-ai",
  "description": "Connect the AI models served on the Archetype AI Platform"
}
{
  "name": "connector-definitions/numbers",
  "description": "Seamlessly integrate third-party blockchain services through the Numbers Protocol, providing security, verifiability and traceability to data management"
}
{
  "name": "connector-definitions/airbyte-destination",
  "description": "Leverage the power of Airbyte and its 30+ destination connectors to facilitate data movement and transformation"
}
{
  "name": "connector-definitions/bigquery",
  "description": "Insert data to BigQuery tables"
}
{
  "name": "connector-definitions/gcs",
  "description": "Upload data to Google's Cloud Storage"
}
{
  "name": "connector-definitions/google-search",
  "description": "Leverage the Google Search engine"
}
{
  "name": "connector-definitions/pinecone",
  "description": "Build and search vector datasets"
}
{
  "name": "connector-definitions/redis",
  "description": "Manage data in NoSQL Redis databases"
}
{
  "name": "connector-definitions/restapi",
  "description": "Make requests to external REST APIs"
}
{
  "name": "connector-definitions/website",
  "description": "Scrape websites"
}
{
  "name": "operator-definitions/base64",
  "description": "Encode or decode a string in Base64 format"
}
{
  "name": "operator-definitions/start",
  "description": "Define data formats customized for their AI-first applications"
}
{
  "name": "operator-definitions/end",
  "description": "Create an output interface in a pipeline when triggered synchronously"
}
{
  "name": "operator-definitions/json",
  "description": "Manipulate and convert JSON objects"
}
{
  "name": "operator-definitions/image",
  "description": "Manipulate image files"
}
{
  "name": "operator-definitions/text",
  "description": "Extract and manipulate text from different sources"
}