Added the .gitignore file for the whole project.

.gitignore

@@ -0,0 +1,54 @@
+# Xcode
+# General
+.DS_Store
+.AppleDouble
+.LSOverride
+
+# Build generated
+build/
+DerivedData/
+*.o
+*.obj
+
+# Xcode
+xcuserdata/
+*.xcuserstate
+*.xcscmblueprint
+*.xccheckout
+*.xcdebugger
+*.hmap
+*.ipa
+*.dSYM
+*.dSYM.zip
+
+# Workspace settings (shared by team) - keep these under version control if desired
+# Uncomment to keep WorkspaceSettings
+# !xcshareddata/WorkspaceSettings.xcsettings
+
+# Xcode project user files
+*.pbxuser
+!default.pbxuser
+*.mode1v3
+!default.mode1v3
+*.mode2v3
+!default.mode2v3
+*.perspectivev3
+!default.perspectivev3
+
+# Swift Package Manager
+/.build/
+/.swiftpm/
+Package.resolved
+
+# Environment files
+.env
+.env.*
+
+# Archive / export
+*.xcarchive
+
+# Ignore Swift PM artifact indexes
+/.build/checkouts/
+
+# macOS
+.DS_Store