TypeScript compatibility (#379)

* Update file extensions and exports for TypeScript compatibility

* docs: fix typo in getting-started.md

* chore: add no-trailing-punctuation rule to VS Code settings

* feat: add @docusaurus/theme-mermaid for mermaid diagram support

* Update import paths for MermaidDiagram component

* remove redudndant check, use effect only runs after the component is mounted

* Update docusaurus.config.ts to fix syntax error

* bring back check because it's not possible to properly cancel a dynamic import

* feat: optimize dynamic import in CodeBlock component

* chore: update VS Code extensions.json with eslint recommendation

* Update docusaurus.config.ts to add GitHub repository link in header

tsconfig.json

@@ -0,0 +1,17 @@
+// https://docusaurus.io/docs/typescript-support
+// This file is not used in compilation. It is here just for a nice editor experience.
+{
+  "extends": "@docusaurus/tsconfig",
+  "compilerOptions": {
+    "baseUrl": ".",
+    // https://miyoon.medium.com/array-parameters-in-tsconfig-json-are-always-overwritten-11c80bb514e1
+    // https://github.com/microsoft/TypeScript/issues/20110
+    "types": [
+      "node",
+      "@docusaurus/module-type-aliases",
+      "@docusaurus/theme-classic",
+      "docusaurus-plugin-sass"
+    ]
+  },
+  "exclude": ["node_modules", "build", ".docusaurus"]
+}