/sk Command Rework

[erenkarakal]

Problem

The current way the /sk command is written makes it nearly impossible to add new features, fix bugs, or even tell what's going on.
There are also lots of issues created for the /sk command that were untouched for a long time.

Solution

Deletes the old SkriptCommand and SkriptCommandTabCompleter classes and replaces them with a new SubCommand class.
To add a new SubCommand, you create a new class for your command and extend SubCommand:

class MyCommand extends SubCommand {

	public MyCommand() {
		super("command", "aliases");
	}

	@Override
	public void execute(@NotNull CommandSender sender, @NotNull String @NotNull [] args) {
		// /sk command or /sk aliases
		sender.sendMessage("You ran this command.");
	}

	@Override
	public List<String> getTabCompletions(@NotNull CommandSender sender, @NotNull String @NotNull [] args) {
		return List.of("tab completions");
	}

}

Then, add your subcommand inside the new SkriptCommand class

For commands that share a lot of code, such as /sk enable | disable | reload, a new ScriptCommandUtils class was added as a utility class.
This approach makes it way easier to work on anything related to the /sk command.

Full Changelog

• New system for subcommands
• SkriptConfig.load() is now public (marked as internal)
• /sk help now groups same subcommands with different aliases. (Missing skript command.help.show #7606)

- list - Lists all enabled and disabled scripts
- show - Lists all enabled and disabled scripts
+ list/show - Lists all enabled and disabled scripts

• Added a new /sk recover command that dumps all scripts in memory to files, useful for recovering accidentally deleted scripts.
• Added a new /sk parse <code> command that works the same way as effect commands do, except they don't have to be enabled through the config. (parse effect subcommand #6899)
• Node#getComment and Node#getIndentation were made public for /sk recover
• Added missing [Skript] prefixes in /sk reload (Skript errors missing prefix in dev/feature #7297)
• Server version in /sk info is now more detailed:

- 1.21.8-60-29c8822 (MC: 1.21.8)
+ Paper 1.21.8 #60 (29c8822)

• Added proper support for enabling, disabling, and reloading symbolic links (Add Support for Symlink Files and Folders in /sk Command #7703, /sk tab completions break in symlinked directories #6825, Skript doesn't play well with Symbolic Links #8682)
• When enabling disabled scripts, tab completions now also show the script name without the disabled prefix (Ignore first hyphen in /skript enable #7666)
• Added /sk reload last for reloading the last reloaded script. The saved last script is global
• Fixed wrong colored error messages when reloading files (Reloading all scripts returns green when errors are encountered #6425)

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Completes: none
Related: none

[Efnilite]

i like the new structure, good work 🙏

[sovdeeth]

some sections look unfinished with todos or just stubs, is that intentional?
Missing a lot of documentation but otherwise seems pretty good

[APickledWalrus]

Looks pretty good overall, great work! I have a few minor formatting suggestions.

I might like to see us move to use the Paper/Brigadier API: https://docs.papermc.io/paper/dev/command-api/basics/introduction/
Though I'm not sure how that might impact the organization of this PR. Could always be done in another future rework.

[sovdeeth]

do you plan on doing this for this pr?

[sovdeeth]

stopop1!!!!!