feat: init gitpod config

.gitpod.yml

+# This configuration file was automatically generated by Gitpod.
+# Please adjust to your needs (see https://www.gitpod.io/docs/config-gitpod-file)
+# and commit this file to your remote git repository to share the goodness with others.
+
+tasks:
+  - init: npm install && npm run build
+    command: npm run start
+# Ports to expose on workspace startup
+ports:
+  - port: 3000
+    onOpen: open-browser
+vscode:
+  extensions:
+    - bierner.markdown-preview-github-styles
+    - GitLab.gitlab-workflow
+    - pinage404.git-extension-pack
+    - DavidAnson.vscode-markdownlint
+    - silvenon.mdx
+    - esbenp.prettier-vscode
+    - ecmel.vscode-html-css
+    - zhuangtongfa.material-theme