chore: organize .gitignore and add VS Code workspace config

Restructures .gitignore with logical sections and comments to improve maintainability and clarity. Groups related patterns under headers like Dependencies, Build Artifacts, Certificates, and Secrets.

Adds VS Code workspace configuration to standardize development environment across the team. Includes recommended extensions for React Native/Expo development (Biome, Expo tools, React Native debugger, Tailwind IntelliSense) and comprehensive editor settings for formatting, TypeScript performance, and file navigation.

Configures Biome as the default formatter with format-on-save enabled for JavaScript/TypeScript files. Optimizes TypeScript settings for better auto-imports and IntelliSense. Enables file nesting in explorer and excludes build directories from file watcher to improve editor performance.

.gitignore

@@ -1,27 +1,16 @@
+# Dependencies and Package Managers
 node_modules/
-.expo/
-dist/
-npm-debug.*
-*.jks
-*.p8
-*.p12
-*.key
-*.mobileprovision
-*.orig.*
-web-build/
-modules/vlc-player/android/build
-
-# macOS
-.DS_Store
-
-expo-env.d.ts
-
-Streamyfin.app
-
-*.mp4
-Streamyfin.app
+bun.lock
+bun.lockb
 package-lock.json
 
+# Expo and React Native Build Artifacts
+.expo/
+dist/
+web-build/
+.tsbuildinfo
+
+# Platform-specific Build Directories
 /ios
 /android
 /iostv
@@ -29,21 +18,48 @@ package-lock.json
 /androidmobile
 /androidtv
 
+# Module-specific Builds
+modules/vlc-player/android/build
 modules/player/android
+modules/hls-downloader/android/build
 
-pc-api-7079014811501811218-719-3b9f15aeccf8.json
-credentials.json
+# Generated Applications
+Streamyfin.app
 *.apk
 *.ipa
-.continuerc.json
+*.aab
 
+# Certificates and Keys
+*.jks
+*.p8
+*.p12
+*.key
+*.mobileprovision
+
+# Debug and Temporary Files
+npm-debug.*
+*.orig.*
+*.mp4
+
+# OS-specific Files
+# macOS
+.DS_Store
+
+# IDE and Editor Files
 .vscode/
 .idea/
 .ruby-lsp
-modules/hls-downloader/android/build
-streamyfin-4fec1-firebase-adminsdk.json
+
+# Environment and Configuration
+expo-env.d.ts
+.continuerc.json
 .env
 .env.local
-*.aab
-/version-backup-*
-bun.lockb
+
+# Secrets and Credentials
+pc-api-7079014811501811218-719-3b9f15aeccf8.json
+credentials.json
+streamyfin-4fec1-firebase-adminsdk.json
+
+# Version and Backup Files
+/version-backup-*