feat: Create subcommandPermCheck plugin

[Peter-MJ-Parker]

This plugin was requested to be uploaded for basic sub command permission handling. Only available for slash commands and will fault out for other command types.

Plugin Submission Checklist

Before submitting your plugin, please ensure that you have followed the specifications below:

• Your plugin code includes a JSDoc block with @plugin at the beginning and @end at the end.
• The order of plugin metadata within the JSDoc block follows the structure provided:
  1. @plugin
  2. description
  3. @author (you can have multiple authors in this format: @author @jacoobes [<@182326315813306368>])
  4. @version (with the version number)
  5. @example (a nice example of how to use your plugin)
  6. @end

this is an example:

/** 
 * @plugin
 * filters autocomplete interaction that pass the criteria
 * @author @jacoobes [<@182326315813306368>]
 * @version 1.0.0
 * @example
 * ```ts
 * import { CommandType, commandModule } from "@sern/handler";
 * import { filterA } from '../plugins/filterA.js'
 * export default commandModule({
 *    type : CommandType.Slash,
 *    options: [
 *       {  
 *          autocomplete: true,
 *          command : {
 *             //only accept autocomplete interactions that include 'poo' in the text
 *             onEvent: [filterA(s => s.includes('poo'))],
 *             execute: (autocomplete) => {
 *                let data = [{ name: 'pooba', value: 'first' }, { name: 'pooga', value: 'second' }]
 *                autocomplete.respond(data) 
 *             }
 *          }
 *       }
 *    ],
 *    execute: (ctx, args) => {}
 * })
 * @end
 */

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[Peter-MJ-Parker]

Finished reviewing and corrected conflicts.