feat(export): add re-exports for shared modules

- Add re-exports for classes, types, interfaces, decorators, and helpers.
- Remove unused `export.ts` file to streamline module structure.

Signed-off-by: Max P. <Mail@MPassarello.de>

src/mod.ts

@@ -0,0 +1,5 @@
+export { TSinjex } from "./classes/mod.ts";
+export type { Identifier, InitDelegate } from "./types/mod.ts";
+export type { ITSinjex, ITSinjex_ } from "./interfaces/mod.ts";
+export { Inject, Register } from "./decorators/mod.ts";
+export type { ImplementsStatic } from "./helper/mod.ts";