Add clipboard functionality

[Hyde46]

Add option to save commands to clipboard.
Useful if hoard list is not run with autocomplete as shell plugin

[PurpleMyst]

I'm willing to work on this.

[PurpleMyst]

I'd love to get some more specification: Where do you want me to copy to the clipboard? In which subcommands?

[Hyde46]

Excited that you're interested in this issue!

I think this first needs some research on how to approach this properly.
The goal would be threefold:

• The subcommand pick sends the string for the found command to the clipboard of the used operating system instead of just printing it to the console.

For the next two, its good to know that hoard can be installed as a shell plugin, which runs hoard list when called.
When running as a shell plugin, and selecting a command ( With the enter key ) in the GUI, your shell prompt will automatically be filled with the selected command. However, I have not found a way yet to replicate this functionality when the program is not ran as a shell plugin.
Thus:

• When running hoard list as a shell plugin, copy a command into the clipboard by a (new) shortcut like <CTRL>y. See here for exemplary key handler events.
• When running hoard list not as a shell plugin, support the previous way to send a command to the clipboard, but also when pressing enter do the same

The logic for the last two of actually sending a string to the clipboard can be handled after the hoard list subprocess is finished here.
Feel free to refactor this into a sperate file handling clipboard stuff

A final point on the clipboard support. hoard is expected to run on linux and mac. So, the clipboard handler should be capable to handle x11, wayland and whowever mac is doing it. This crate seems to lead the right way.
Also, this means the way of installing hoard has to be reconsidered, as a system level library will be a dependency. Either that, or we programatically check if the right libraries are installed and only support this feature if they are present.

Any thoughts on this? I'm open for any suggestion if you have some!

[PurpleMyst]

I think that looks good.

So, in short:

• Support ^y to copy a command to the clipboard in hoard list
• Also copy a command to the clipboard automatically if enter is pressed while we're not in shell-plugin mode.
• hoard pick still prints to the console but also copies to the clipboard.

[Hyde46]

Sounds good!
Ill then take care to update the installers making sure the necessary dependencies are met for however you will will implement the clipboards

[PurpleMyst]

Sounds good! I'll work on this in the coming days. Progress might be a bit slow as I'm very busy.

[Hyde46]

Absolutely no worries, take the time you need for it !
Glad you're interested in contributing