Update gitignore

Src/NFTWallet/.gitignore

@@ -9,22 +9,22 @@
 /[Bb]uilds/
 /[Ll]ogs/
 /[Mm]emoryCaptures/
- 
+
 # Asset meta data should only be ignored when the corresponding asset is also ignored
 !/[Aa]ssets/**/*.meta
- 
+
 # Uncomment this line if you wish to ignore the asset store tools plugin
 # /[Aa]ssets/AssetStoreTools*
- 
+
 # Autogenerated Jetbrains Rider plugin
 [Aa]ssets/Plugins/Editor/JetBrains*
- 
+
 # Visual Studio cache directory
 .vs/
- 
+
 # Gradle cache directory
 .gradle/
- 
+
 # Autogenerated VS/MD/Consulo solution and project files
 ExportedObj/
 .consulo/
@@ -42,18 +42,20 @@ ExportedObj/
 *.mdb
 *.opendb
 *.VC.db
- 
+
 # Unity3D generated meta files
 *.pidb.meta
 *.pdb.meta
 *.mdb.meta
- 
+
 # Unity3D generated file on crash reports
 sysinfo.txt
- 
+
 # Builds
 *.apk
 *.unitypackage
- 
+
 # Crashlytics generated file
-crashlytics-build.properties
+crashlytics-build.properties
+
+.history/