chore(docs): add .gitignore for Astro files

Author: shtse8

packages/docs/.gitignore

@@ -0,0 +1,19 @@
+# Astro build output
+dist/
+
+# Astro cache and generated types
+.astro/
+
+# Dependencies
+node_modules/
+
+# Logs
+*.log
+npm-debug.log*
+yarn-debug.log*
+yarn-error.log*
+pnpm-debug.log*
+
+# OS generated files
+.DS_Store
+Thumbs.db