Allow extension yang.settings JSON Schema extensibility

.editorconfig

@@ -32,3 +32,7 @@ indent_size = 2
 [{*.xtext,*.xtend,*.java}]
 indent_style = tab
 indent_size = 4
+
+[JenkinsFile]
+indent_style = space
+indent_size = 4

.vscode/extensions.json

@@ -0,0 +1,13 @@
+{
+  // See https://go.microsoft.com/fwlink/?LinkId=827846 to learn about workspace recommendations.
+  // Extension identifier format: ${publisher}.${name}. Example: vscode.csharp
+  // List of extensions which should be recommended for users of this workspace.
+  "recommendations": [
+    "editorconfig.editorconfig",
+    "grammarcraft.xtend-lang",
+    "grammarcraft.xtext-lang",
+    "bierner.github-markdown-preview"
+  ],
+  // List of extensions recommended by VS Code that should not be recommended for users of this workspace.
+  "unwantedRecommendations": []
+}

docs/Extensions.md

@@ -86,13 +86,14 @@ project's root directory.
 ## Add the plugin
 
 Create (or open) the `yang.settings` file and add the plugin using the following
-configuration:
+configuration. Other classpaths, validator and commands classes can be provided
+as well.
 
 ```json
   "extension" : {
-    "classpath" : "extension.jar",
-    "validators" : "my.pack.MyExampleValidator",
-    "commands" : "my.pack.MyCommand"
+    "classpath" : "extension.jar:./second-extension.jar:./local-classdir/.",
+    "validators" : "my.pack.MyExampleValidator:my.pack.MyYetAnotherExampleValidator",
+    "commands" : "my.pack.MyCommand:my.pack.MyOtherCommand"
   }
 ```
 

schema/yang-lsp-settings-schema.json

@@ -34,18 +34,17 @@
       "type": "object",
       "properties": {
         "classpath": {
-          "description": "Location of extension jar relative to the project's root directory",
-          "type": "string",
-          "pattern": "\\.jar$"
+          "description": "Location of extension jar relative to the project's root directory.\nIt may also be a path to a directory.\nYou can specify multiple elements separated with a colon ':'",
+          "type": "string"
         },
         "validators": {
-          "description": "IValidatorExtension implementor class e.g., 'my.pack.MyExampleValidator'",
-          "markdownDescription": "`IValidatorExtension` implementor class e.g., `my.pack.MyExampleValidator`",
+          "description": "IValidatorExtension implementor classes e.g., 'my.pack.MyExampleValidator'.\nYou can specify multiple elements separated with a colon ':'",
+          "markdownDescription": "`IValidatorExtension` implementor classes e.g., `my.pack.MyExampleValidator`.\nYou can specify multiple elements separated with a colon ':'",
           "type": "string"
         },
         "commands": {
-          "description": "ICommandExtension implementor class e.g., 'my.pack.MyExampleCommand'",
-          "markdownDescription": "`ICommandExtension` implementor class e.g., `my.pack.MyExampleCommand`",
+          "description": "ICommandExtension implementor classes e.g., 'my.pack.MyExampleCommand'.\nYou can specify multiple elements separated with a colon ':'",
+          "markdownDescription": "`ICommandExtension` implementor class e.g., `my.pack.MyExampleCommand`.\nYou can specify multiple elements separated with a colon ':'",
           "type": "string"
         }
       },
@@ -255,8 +254,7 @@
           "$ref": "#/properties/diagnostic/$defs/severity",
           "default": "ignore"
         }
-      },
-      "additionalProperties": false
+      }
     }
   },
   "additionalProperties": false