Add section for diagnostics' VS Code settings

For eng/ide/ada_language_server#1455

Author: AnthonyLeonardoGracio

integration/vscode/ada/package.json

@@ -304,18 +304,6 @@
                         },
                         "order": 1
                     },
-                    "ada.projectDiagnostics": {
-                        "scope": "window",
-                        "type": "boolean",
-                        "default": null,
-                        "description": "Controls whether or not the Ada Language Server should emit project diagnostics into the VS Code Problems view."
-                    },
-                    "ada.alireDiagnostics": {
-                        "scope": "window",
-                        "type": "boolean",
-                        "default": null,
-                        "description": "Controls whether or not the Ada Language Server should emit diagnostics related to alire into the VS Code Problems view."
-                    },
                     "ada.defaultCharset": {
                         "scope": "window",
                         "type": "string",
@@ -398,12 +386,6 @@
                         "default": null,
                         "description": "Controls the policy for displaying overriding and overridden subprograms on navigation requests such as 'Go To Definition' or 'Go To Implementations'."
                     },
-                    "ada.adaFileDiagnostics": {
-                        "scope": "window",
-                        "type": "boolean",
-                        "default": null,
-                        "description": "Controls whether or not the Ada Language Server should emit diagnostics related to Ada files into the VS Code Problems view."
-                    },
                     "ada.foldComments": {
                         "scope": "window",
                         "type": "boolean",
@@ -436,6 +418,30 @@
                     }
                 }
             },
+            {
+                "type": "object",
+                "title": "Diagnostics",
+                "properties": {
+                    "ada.projectDiagnostics": {
+                        "scope": "window",
+                        "type": "boolean",
+                        "default": null,
+                        "description": "Controls whether or not the Ada Language Server should emit project diagnostics into the VS Code Problems view."
+                    },
+                    "ada.alireDiagnostics": {
+                        "scope": "window",
+                        "type": "boolean",
+                        "default": null,
+                        "description": "Controls whether or not the Ada Language Server should emit diagnostics related to alire into the VS Code Problems view."
+                    },
+                    "ada.adaFileDiagnostics": {
+                        "scope": "window",
+                        "type": "boolean",
+                        "default": null,
+                        "description": "Controls whether or not the Ada Language Server should emit diagnostics related to Ada files into the VS Code Problems view."
+                    }
+                }
+            },
             {
                 "type": "object",
                 "title": "Miscellaneous",