fix(git): add vendor in .gitignore

vendor/github.com/inconshreveable/mousetrap/trap_others.go

@@ -1,16 +0,0 @@
-//go:build !windows
-// +build !windows
-
-package mousetrap
-
-// StartedByExplorer returns true if the program was invoked by the user
-// double-clicking on the executable from explorer.exe
-//
-// It is conservative and returns false if any of the internal calls fail.
-// It does not guarantee that the program was run from a terminal. It only can tell you
-// whether it was launched from explorer.exe
-//
-// On non-Windows platforms, it always returns false.
-func StartedByExplorer() bool {
-	return false
-}