Improvement: Usage and Integration of External Crates in COM-API (e.g., paste crate)

### What

The COM-API currently utilizes the external paste crate for declarative macros to simplify interface definitions. In future development, additional external crates may also be required.
Since these crates are not certified, we need to define a clear approach for how such dependencies should be handled within the score.

### How

Two possible approaches:

1. Integrate changes into the SCORE repository

- Bring the relevant functionality or macro logic directly into the SCORE repo and maintain it internally.

2. Manual implementation

- Recreate the required macro or helper functionality manually within our codebase.

### Estimates for realization

0

### Category

- [ ] Affects Detailed Design

### Requirements / Architecture

- [ ] Requirements / Architecture are not affected by this change?