Bump TypeScript to 5.3 with verbatimModuleSyntax

This commit upgrades TypeScript to the latest version 5.3 and introduces
`verbatimModuleSyntax` in line with the official Vue guide
recommendatinos (vuejs/docs#2592).

By enforcing `import type` for type-only imports, this commit improves
code clarity and supports tooling optimization, ensuring imports are
only bundled when necessary for runtime.

Changes:

- Bump TypeScript to 5.3.3 across the project.
- Adjust import statements to utilize `import type` where applicable,
  promoting cleaner and more efficient code.

src/application/Context/State/Selection/Script/ScriptSelection.ts

@@ -1,7 +1,7 @@
-import { IEventSource } from '@/infrastructure/Events/IEventSource';
-import { IScript } from '@/domain/IScript';
-import { SelectedScript } from './SelectedScript';
-import { ScriptSelectionChangeCommand } from './ScriptSelectionChange';
+import type { IEventSource } from '@/infrastructure/Events/IEventSource';
+import type { IScript } from '@/domain/IScript';
+import type { SelectedScript } from './SelectedScript';
+import type { ScriptSelectionChangeCommand } from './ScriptSelectionChange';
 
 export interface ReadonlyScriptSelection {
   readonly changed: IEventSource<readonly SelectedScript[]>;