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.

tests/unit/application/Parser/Executable/Script/Validation/Syntax/ConcreteSyntaxes.spec.ts

@@ -0,0 +1,31 @@
+import { describe, it, expect } from 'vitest';
+import { ShellScriptSyntax } from '@/application/Parser/Executable/Script/Validation/Syntax/ShellScriptSyntax';
+import type { ILanguageSyntax } from '@/application/Parser/Executable/Script/Validation/Syntax/ILanguageSyntax';
+import { BatchFileSyntax } from '@/application/Parser/Executable/Script/Validation/Syntax/BatchFileSyntax';
+
+function getSystemsUnderTest(): ILanguageSyntax[] {
+  return [new BatchFileSyntax(), new ShellScriptSyntax()];
+}
+
+describe('ConcreteSyntaxes', () => {
+  describe('commentDelimiters', () => {
+    for (const sut of getSystemsUnderTest()) {
+      it(`${sut.constructor.name} returns defined value`, () => {
+        // act
+        const value = sut.commentDelimiters;
+        // assert
+        expect(value);
+      });
+    }
+  });
+  describe('commonCodeParts', () => {
+    for (const sut of getSystemsUnderTest()) {
+      it(`${sut.constructor.name} returns defined value`, () => {
+        // act
+        const value = sut.commonCodeParts;
+        // assert
+        expect(value);
+      });
+    }
+  });
+});

tests/unit/application/Parser/Executable/Script/Validation/Syntax/SyntaxFactory.spec.ts

@@ -0,0 +1,14 @@
+import { describe } from 'vitest';
+import { SyntaxFactory } from '@/application/Parser/Executable/Script/Validation/Syntax/SyntaxFactory';
+import { ScriptingLanguage } from '@/domain/ScriptingLanguage';
+import { ShellScriptSyntax } from '@/application/Parser/Executable/Script/Validation/Syntax/ShellScriptSyntax';
+import { ScriptingLanguageFactoryTestRunner } from '@tests/unit/application/Common/ScriptingLanguage/ScriptingLanguageFactoryTestRunner';
+import { BatchFileSyntax } from '@/application/Parser/Executable/Script/Validation/Syntax/BatchFileSyntax';
+
+describe('SyntaxFactory', () => {
+  const sut = new SyntaxFactory();
+  const runner = new ScriptingLanguageFactoryTestRunner()
+    .expectInstance(ScriptingLanguage.shellscript, ShellScriptSyntax)
+    .expectInstance(ScriptingLanguage.batchfile, BatchFileSyntax);
+  runner.testCreateMethod(sut);
+});