Improve NIST data source importing

[dommyrock]

Improve NIST data source importing

This primarily takes care of batch importing YEARLY CVE dataset imports from NIST .
Current BATCH_SIZE = 5000.

You can see a demo from importing and updating existing records in the ticket comments.

I have also touched on some minor details :

• Added UNIQUE Constraint's to cves and objects tables. Stopping us from constantly having to ping the DB to check if CVE-ID and (cve-vendor-product) combination already exists.
• Fixing compiler warnings for cargo.toml workspace missing workspace =resolver = "2" verssion.
• moved some common crates to [workspace.dependencies]
• updated few shared crate versions where it made sense to do so
• update score,severity and vector values in db (they were just defaulting to type values before)
• updated workspace to rust 2024 edition (which re-formatted some unrelated files)

I'm not sure where the final place for the BATCH_SIZE will be (maybe it makes sense to move to ENV Variable)
But for now i kept it in kepler/domain-db/src/db/mod.rs since this is where PostgresRepository is defined and where most of DB transactions are taking place.

I have

• run cargo fmt;
• run cargo clippy;
• run cargo testand all tests pass;
• linked to the originating issue (if applicable).

[dergecko]

praise

Really like the comments and structure of the code.
Also there a lot iof tests which makes it more maintainable in the future.

[dommyrock]

I think I covered all of your suggestions .

• I have also updated rust edition to 2024 (I remembered we mentioned it for other project )
  Thanks for the detailed review btw : )

[dergecko]

Nice really like the comments.
Found some minor typos and one memroy related issue.

[dergecko]

Looks good to me