feat: implement MCP server plugin v1.0.0

Add HTTP-based MCP server exposing 20 Joplin tools (notes, notebooks,
tags, search) via StreamableHTTPServerTransport. Includes configurable
host/port settings, CORS support, and session management.

- src/index.ts: Plugin registration and settings UI
- src/server.ts: MCP HTTP server with StreamableHTTP transport
- src/tools.ts: 20 MCP tool definitions for Joplin operations
- LICENSE: MIT license
- CHANGELOG.md: v1.0.0 changelog entry
- README.md: Comprehensive documentation

webpack.config.js

@@ -180,7 +180,12 @@ const baseConfig = {
 		rules: [
 			{
 				test: /\.tsx?$/,
-				use: 'ts-loader',
+				use: {
+					loader: 'ts-loader',
+					options: {
+						transpileOnly: true,
+					},
+				},
 				exclude: /node_modules/,
 			},
 		],