doc(linux): Add linux client install.sh & uninstall.sh

.gitattributes

@@ -1,6 +1,10 @@
 # Auto detect text files and perform LF normalization
 * text=auto
 
+# Shell scripts must keep LF line endings even when checked out on Windows,
+# otherwise Linux refuses them with "bad interpreter: /usr/bin/env^M".
+*.sh text eol=lf
+
 # Custom for Visual Studio
 *.cs     diff=csharp