Add module "please"

This adds the command `please` and the key binding `Ctrl+Shift+S`.
Both of them are for executing the previous command with super user
privileges.

modules/please/Readme.md

@@ -0,0 +1,27 @@
+# Please
+This adds utilities for runnning the previous command with super powers.
+
+## Usage
+
+### Please command
+The `please` command simply repeats the previous command preceded by sudo.
+
+Warning: You should be aware of the fact that this is also done in a shell that you just opened and you don't see what you execute with root privileges.
+```shell
+ ❯ id
+uid=501(eugenk) gid=20(staff)
+
+ ❯ please
+uid=0(root) gid=0(wheel)
+```
+
+### Key binding
+There is also a keybinding (`Ctrl+Shift+S`) that puts your previous command to the commandline and prepends `sudo ` to it.
+This is useful when you want so see or edit your previous command before executing it.
+```shell
+ ❯ id
+uid=501(eugenk) gid=20(staff)
+
+[Ctrl+Shift+S yields:]
+ ❯ sudo id
+```

modules/please/init.zsh

@@ -0,0 +1,5 @@
+alias please='sudo $(fc -ln -1)'
+
+previous_command_with_sudo() { zle beginning-of-line; zle -U "sudo $(fc -ln -1)" }
+zle -N previous-command-with-sudo previous_command_with_sudo
+bindkey "^S" previous-command-with-sudo # Ctrl+Shift+S