Modify basic settings, i18n, add docs

- Edit README for subspecific rules
- Add meetup-2-guide for both root and en
- Remove vscode folder
- Remove default pages and docs
- Gitignore add editor section
- Setup i18n

Signed-off-by: Asai Neko <sugar@sne.moe>

.gitignore

@@ -1,5 +1,6 @@
 # build output
 dist/
+
 # generated types
 .astro/
 
@@ -12,7 +13,6 @@ yarn-debug.log*
 yarn-error.log*
 pnpm-debug.log*
 
-
 # environment variables
 .env
 .env.production
@@ -20,6 +20,11 @@ pnpm-debug.log*
 # macOS-specific files
 .DS_Store
 
+# Editor files
+.vs
+.vscode
+.idea
+
 # Yarn v2
 .yarn/*
 !.yarn/cache