feat: add list endpoint for out-of-band records

[kukgini]

Add GET /out-of-band/records endpoint to query OobRecord entries with pagination and filtering support. This addresses the lack of any way to discover or list existing OOB records in the wallet.

Supports filtering by state, role, connection_id, and invi_msg_id, plus standard pagination parameters (limit, offset, order_by, descending).

Closes #4044

[kukgini]

I created this PR by referencing the connection route implementation. However, someone pointed out the following. Could you please check?:

alt=True is incorrect with scalar string post_filter values. The match_post_filter method in base_record.py uses Python's in operator when alt=True, which performs substring matching on strings rather than equality checking. For example, filtering by state="initial" with alt=True would cause record.get("state") in "initial" to match any substring (e.g., "i", "init" ). The fix is to remove alt=True (defaulting to False ), which uses direct equality -- consistent with the pattern in issue_credential/v2_0/routes.py and present_proof/v2_0/routes.py.

[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
100.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud

[jamshale]

I think this is fine to add to the api 👍

[jamshale]

I created this PR by referencing the connection route implementation. However, someone pointed out the following. Could you please check?:

alt=True is incorrect with scalar string post_filter values. The match_post_filter method in base_record.py uses Python's in operator when alt=True, which performs substring matching on strings rather than equality checking. For example, filtering by state="initial" with alt=True would cause record.get("state") in "initial" to match any substring (e.g., "i", "init" ). The fix is to remove alt=True (defaulting to False ), which uses direct equality -- consistent with the pattern in issue_credential/v2_0/routes.py and present_proof/v2_0/routes.py.

I'm not sure about this...

[swcurran]

@PatStLouis -- can you please backport this to the 1.3 and 1.2 (if applicable) LTS branches, so we can include it in the next releases? I assume that is a quick task.