add project files

Assets/.gitignore

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+### C#
+# Build results
+[Bb]in/
+[Oo]bj/
+
+# Visual Studio cache/options directory
+.vs/
+
+# User-specific files
+*.suo
+*.user
+
+# Debug symbols
+*.pdb
+
+# NuGet Packages
+*.nupkg
+**/[Pp]ackages/*
+!**/[Pp]ackages/build/
+
+# .NET build artifacts
+artifacts/
+
+# Publish output
+publish/
+
+### Unity
+# Unity generated directories
+/[Ll]ibrary/
+/[Tt]emp/
+/[Oo]bj/
+/[Bb]uild/
+/[Bb]uilds/
+/[Ll]ogs/
+/[Uu]ser[Ss]ettings/
+/[Mm]emory[Cc]aptures/
+
+# Asset meta data should only be ignored when the corresponding asset is also ignored
+!/[Aa]ssets/**/*.meta
+
+# Build output
+*.apk
+*.aab
+*.unitypackage
+
+# Autogenerated solution and project files
+*.csproj
+*.unityproj
+*.sln
+*.suo
+
+### Windows
+# Windows thumbnail cache files
+Thumbs.db
+
+# Folder config file
+[Dd]esktop.ini
+
+# Recycle Bin used on file shares
+$RECYCLE.BIN/
+
+# Windows shortcuts
+*.lnk