subcommand and /abort fixes

- use AbortController in /abort instead of execption
- allow quiet abort
- allow loud abort
- allow abort reason
- abort when aborted in subcommand
- break out of loops when aborted inside
- fix parsing of subcommands with multiple commands

public/scripts/slash-commands/SlashCommandAbortController.js

@@ -5,7 +5,8 @@ export class SlashCommandAbortController {
     constructor() {
         this.signal = new SlashCommandAbortSignal();
     }
-    abort(reason = 'No reason.') {
+    abort(reason = 'No reason.', isQuiet = false) {
+        this.signal.isQuiet = isQuiet;
         this.signal.aborted = true;
         this.signal.reason = reason;
     }
@@ -20,8 +21,8 @@ export class SlashCommandAbortController {
 }
 
 export class SlashCommandAbortSignal {
+    /**@type {boolean}*/ isQuiet = false;
     /**@type {boolean}*/ paused = false;
     /**@type {boolean}*/ aborted = false;
     /**@type {string}*/ reason = null;
-
 }

public/scripts/slash-commands/SlashCommandClosure.js

@@ -161,6 +161,7 @@ export class SlashCommandClosure {
                 let args = {
                     _scope: this.scope,
                     _parserFlags: executor.parserFlags,
+                    _abortController: this.abortController,
                 };
                 let value;
                 // substitute named arguments
@@ -254,6 +255,7 @@ export class SlashCommandClosure {
         if (this.abortController?.signal?.aborted) {
             const result = new SlashCommandClosureResult();
             result.isAborted = true;
+            result.isQuietlyAborted = this.abortController.signal.isQuiet;
             result.abortReason = this.abortController.signal.reason.toString();
             return result;
         }

public/scripts/slash-commands/SlashCommandClosureResult.js

@@ -2,6 +2,7 @@ export class SlashCommandClosureResult {
     /**@type {boolean}*/ interrupt = false;
     /**@type {string}*/ pipe;
     /**@type {boolean}*/ isAborted = false;
+    /**@type {boolean}*/ isQuietlyAborted = false;
     /**@type {string}*/ abortReason;
     /**@type {boolean}*/ isError = false;
     /**@type {string}*/ errorMessage;