Port to .NET 6

.gitattributes

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+
+# Common settings that generally should always be used with your language specific settings
+
+# Auto detect text files and perform LF normalization
+# https://www.davidlaing.com/2012/09/19/customise-your-gitattributes-to-become-a-git-ninja/
+*          text=auto
+
+#
+# The above will handle all files NOT found below
+#
+
+# Documents
+*.bibtex   text diff=bibtex
+*.doc      diff=astextplain
+*.DOC      diff=astextplain
+*.docx     diff=astextplain
+*.DOCX     diff=astextplain
+*.dot      diff=astextplain
+*.DOT      diff=astextplain
+*.pdf      diff=astextplain
+*.PDF      diff=astextplain
+*.rtf      diff=astextplain
+*.RTF      diff=astextplain
+*.md       text diff=markdown
+*.tex      text diff=tex
+*.adoc     text
+*.textile  text
+*.mustache text
+*.csv      text
+*.tab      text
+*.tsv      text
+*.txt      text
+*.sql      text
+*.ps1      text eol=crlf
+
+# Graphics
+*.png      binary
+*.jpg      binary
+*.jpeg     binary
+*.gif      binary
+*.tif      binary
+*.tiff     binary
+*.ico      binary
+# SVG treated as an asset (binary) by default.
+*.svg      text
+# If you want to treat it as binary,
+# use the following line instead.
+# *.svg    binary
+*.eps      binary
+
+# Scripts
+*.bash     text eol=lf
+*.fish     text eol=lf
+*.sh       text eol=lf
+# These are explicitly windows files and should use crlf
+*.bat      text eol=crlf
+*.cmd      text eol=crlf
+
+# Serialisation
+*.json     text
+*.toml     text
+*.xml      text
+*.yaml     text
+*.yml      text
+
+# Archives
+*.7z       binary
+*.gz       binary
+*.tar      binary
+*.tgz      binary
+*.zip      binary
+
+# Text files where line endings should be preserved
+*.patch    -text
+
+#
+# Exclude files from exporting
+#
+
+.gitattributes export-ignore
+.gitignore     export-ignore
+.gitkeep       export-ignore
+
+# Auto detect text files and perform LF normalization
+*          text=auto
+
+*.cs       text diff=csharp
+*.cshtml   text diff=html
+*.csx      text diff=csharp
+*.sln      text eol=crlf merge=union
+*.csproj   text merge=union
+
+###############################################################################
+# Set default behavior to automatically normalize line endings.
+###############################################################################
+*            text=auto
+
+###############################################################################
+# Set the merge driver for project and solution files
+#
+# Merging from the command prompt will add diff markers to the files if there
+# are conflicts (Merging from VS is not affected by the settings below, in VS
+# the diff markers are never inserted). Diff markers may cause the following
+# file extensions to fail to load in VS. An alternative would be to treat
+# these files as binary and thus will always conflict and require user
+# intervention with every merge. To do so, just comment the entries below and
+# uncomment the group further below
+###############################################################################
+
+*.sln        text eol=crlf
+*.csproj     text eol=crlf
+*.vbproj     text eol=crlf
+*.vcxproj    text eol=crlf
+*.vcproj     text eol=crlf
+*.dbproj     text eol=crlf
+*.fsproj     text eol=crlf
+*.lsproj     text eol=crlf
+*.wixproj    text eol=crlf
+*.modelproj  text eol=crlf
+*.sqlproj    text eol=crlf
+*.wwaproj    text eol=crlf
+
+*.xproj      text eol=crlf
+*.props      text eol=crlf
+*.filters    text eol=crlf
+*.vcxitems   text eol=crlf
+
+
+#*.sln       merge=binary
+#*.csproj    merge=binary
+#*.vbproj    merge=binary
+#*.vcxproj   merge=binary
+#*.vcproj    merge=binary
+#*.dbproj    merge=binary
+#*.fsproj    merge=binary
+#*.lsproj    merge=binary
+#*.wixproj   merge=binary
+#*.modelproj merge=binary
+#*.sqlproj   merge=binary
+#*.wwaproj   merge=binary
+
+#*.xproj     merge=binary
+#*.props     merge=binary
+#*.filters   merge=binary
+#*.vcxitems  merge=binary
+