Init gitignore and gitattributes for unreal and lfs

.gitattributes

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+# UE file types
+*.uasset filter=lfs diff=lfs merge=lfs -text
+*.umap filter=lfs diff=lfs merge=lfs -text
+
+# Raw Content types
+*.fbx filter=lfs diff=lfs merge=lfs -text
+*.3ds filter=lfs diff=lfs merge=lfs -text
+*.psd filter=lfs diff=lfs merge=lfs -text
+*.png filter=lfs diff=lfs merge=lfs -text
+*.mp3 filter=lfs diff=lfs merge=lfs -text
+*.wav filter=lfs diff=lfs merge=lfs -text
+*.xcf filter=lfs diff=lfs merge=lfs -text
+*.jpg filter=lfs diff=lfs merge=lfs -text
+*.blend filter=lfs diff=lfs merge=lfs -text

.gitignore

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+# ---> UnrealEngine
+# Visual Studio 2015 user specific files
+.vs/
+.vscode/
+
+# Compiled Object files
+*.slo
+*.lo
+*.o
+*.obj
+
+# Precompiled Headers
+*.gch
+*.pch
+
+# Compiled Dynamic libraries
+*.so
+*.dylib
+*.dll
+
+# Fortran module files
+*.mod
+
+# Compiled Static libraries
+*.lai
+*.la
+*.a
+*.lib
+
+# Executables
+*.exe
+*.out
+*.app
+*.ipa
+
+# These project files can be generated by the engine
+*.xcodeproj
+*.xcworkspace
+*.sln
+*.suo
+*.opensdf
+*.sdf
+*.VC.db
+*.VC.opendb
+
+# Precompiled Assets
+SourceArt/**/*.png
+SourceArt/**/*.tga
+
+# Binary Files
+Binaries/*
+Plugins/*/Binaries/*
+
+# Builds
+Build/*
+
+# Whitelist PakBlacklist-<BuildConfiguration>.txt files
+!Build/*/
+Build/*/**
+!Build/*/PakBlacklist*.txt
+
+# Don't ignore icon files in Build
+!Build/**/*.ico
+
+# Built data for maps
+*_BuiltData.uasset
+
+# Configuration files generated by the Editor
+Saved/*
+
+# Compiled source files for the engine to use
+Intermediate/*
+Plugins/*/Intermediate/*
+
+# Cache files for the editor to use
+DerivedDataCache/*
+
+#blender autosaves
+*.blend1
+*.blend2
+*.blend3
+
+#StarterContent
+Content/StarterContent/*
+Content/ThirdPerson/*
+