Adjustable visibility of column removal context menu

.gitignore

@@ -1,27 +1,53 @@
-################################################################################
-# This .gitignore file was automatically created by Microsoft(R) Visual Studio.
+# This .gitignore file was automatically created by Microsoft(R) Visual Studio.
 ################################################################################
 
-/Demos/MultiPlatformWindowDemo/.vs/MultiPlatformWindowDemo/v16
-/Demos/MultiPlatformWindowDemo/bin/Debug/net5.0
-/Demos/MultiPlatformWindowDemo/obj
-/src/bin/Debug/net5.0
-/src/obj
-/Demos/MultiPlatformWindowDemo/.vs/MultiPlatformWindowDemo/DesignTimeBuild
-/src/NP.Avalonia.Visuals.1.0.2.nupkg
-/src/NP.Avalonia.Visuals.1.0.3.nupkg
-/src/bin/Release/net5.0
-/src/NP.Avalonia.Visuals.1.0.4.nupkg
-/Demos/MultiPlatformWindowDemo/.vs/MultiPlatformWindowDemo/v17
-/Demos/MultiPlatformWindowDemo/bin/Debug
-/Demos/NP.Demos.CustomWindowSample/.vs
-/Demos/NP.Demos.CustomWindowSample/bin/Debug/net5.0
-/Demos/NP.Demos.CustomWindowSample/obj/Debug/net5.0
-/Demos/NP.Demos.CustomWindowSample/obj
-/Demos/NP.Demos.CustomWindowCustomizationSample/.vs
-/Demos/NP.Demos.CustomWindowCustomizationSample/bin/Debug
-/Demos/NP.Demos.CustomWindowCustomizationSample/obj
-/src/*.nupkg
-/Demos/NP.Demos.BehaviorPrototypes/.vs/NP.Demos.BehaviorPrototypes
-/Demos/NP.Demos.BehaviorPrototypes/bin/Debug
-/Demos/NP.Demos.BehaviorPrototypes/obj
+## Ignore Visual Studio temporary files, build results, and
+## files generated by popular Visual Studio add-ons.
+##
+## Get latest from https://github.com/github/gitignore/blob/main/VisualStudio.gitignore
+
+# User-specific files
+*.rsuser
+*.suo
+*.user
+*.userosscache
+*.sln.docstates
+
+# User-specific files (MonoDevelop/Xamarin Studio)
+*.userprefs
+
+# Mono auto generated files
+mono_crash.*
+
+# Build results
+[Dd]ebug/
+[Dd]ebugPublic/
+[Rr]elease/
+[Rr]eleases/
+x64/
+x86/
+[Ww][Ii][Nn]32/
+[Aa][Rr][Mm]/
+[Aa][Rr][Mm]64/
+bld/
+[Bb]in/
+[Oo]bj/
+[Ll]og/
+[Ll]ogs/
+
+# Visual Studio 2015/2017 cache/options directory
+.vs/
+
+# NuGet Packages
+*.nupkg
+# NuGet Symbol Packages
+*.snupkg
+# The packages folder can be ignored because of Package Restore
+**/[Pp]ackages/*
+# except build/, which is used as an MSBuild target.
+!**/[Pp]ackages/build/
+# Uncomment if necessary however generally it will be regenerated when needed
+#!**/[Pp]ackages/repositories.config
+# NuGet v3's project.json files produces more ignorable files
+*.nuget.props
+*.nuget.targets