Create the documentation for task #80

### What

In task https://github.com/eclipse-score/inc_security_crypto/issues/80 is the initial IAV Primula PQC provider skeleton contributed. Create in this task the documentation for the current status of the implementation. The documentation should explain the provider architecture and current limitation of the PQC usage.

### Acceptance Criteria (DoD)

- [ ] Architecture documentation is available
- [ ] Detailed design documentation is available
- [ ] Manuals documentation is available
- [ ] Requirement documentation is available
- [ ] Safty analyses documentation is available

### How

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