Refactor to unify scripts/categories as Executable

This commit consolidates scripts and categories under a unified
'Executable' concept. This simplifies the architecture and improves code
readability.

- Introduce subfolders within `src/domain` to segregate domain elements.
- Update class and interface names by removing the 'I' prefix in
  alignment with new coding standards.
- Replace 'Node' with 'Executable' to clarify usage; reserve 'Node'
  exclusively for the UI's tree component.

src/application/Parser/Executable/Script/Validation/Syntax/SyntaxFactory.ts

@@ -0,0 +1,16 @@
+import { ScriptingLanguage } from '@/domain/ScriptingLanguage';
+import { ScriptingLanguageFactory } from '@/application/Common/ScriptingLanguage/ScriptingLanguageFactory';
+import type { ILanguageSyntax } from '@/application/Parser/Executable/Script/Validation/Syntax/ILanguageSyntax';
+import { BatchFileSyntax } from './BatchFileSyntax';
+import { ShellScriptSyntax } from './ShellScriptSyntax';
+import type { ISyntaxFactory } from './ISyntaxFactory';
+
+export class SyntaxFactory
+  extends ScriptingLanguageFactory<ILanguageSyntax>
+  implements ISyntaxFactory {
+  constructor() {
+    super();
+    this.registerGetter(ScriptingLanguage.batchfile, () => new BatchFileSyntax());
+    this.registerGetter(ScriptingLanguage.shellscript, () => new ShellScriptSyntax());
+  }
+}