Update generate-api-docs to use the new config file format

Author: octogonz

Diff for: repo-scripts/generate-api-docs/.vscode/launch.json

@@ -0,0 +1,22 @@
+{
+  // Use IntelliSense to learn about possible attributes.
+  // Hover to view descriptions of existing attributes.
+  // For more information, visit: https://go.microsoft.com/fwlink/?linkid=830387
+  "version": "0.2.0",
+  "configurations": [
+    {
+      "type": "node",
+      "request": "launch",
+      "name": "Launch Program",
+      "program": "${workspaceFolder}/node_modules/@microsoft/api-documenter/lib/start.js",
+      "cwd": "${workspaceFolder}",
+      "args": [
+        "generate",
+        "--input-folder",
+        "../../common/temp/api",
+        "--output-folder",
+        "./dist"
+      ]
+    },
+  ]
+}

Diff for: repo-scripts/generate-api-docs/api-documenter.json

@@ -0,0 +1,10 @@
+{
+  "outputTarget": "markdown",
+
+  "plugins": [
+    {
+      "packageName": "doc-plugin-rush-stack",
+      "enabledFeatureNames": [ "rush-stack-markdown-documenter" ]
+    }
+  ]
+}

Diff for: repo-scripts/generate-api-docs/generate-api-docs.cmd

@@ -0,0 +1,2 @@
+@echo off
+.\node_modules\.bin\api-documenter generate --input-folder ..\..\common\temp\api --output-folder .\dist