FEAT: Started install script

Added completion and suggestions for fzf
      Set git Signin on by default
      Changed prefix key to C-z
FIX: Made sure forward and backward search keymappings will still work

git/.gitconfig

@@ -9,3 +9,5 @@
 	required = true
 [init]
 	defaultBranch = main
+[commit]
+	gpgsign = true