feat(anta): Added test case to verify Inbound route map and Outbound route map in BGP neighbor details

[vitthalmagadum]

Description

Verifies BGP Inbound Outbound route-maps of BGP IPv4 peer(s).

Checks whether the correct route maps are applied in the correct direction
(inbound or outbound) on the specified IPv4 BGP neighbors.

Expected Results
----------------
* Success: The test will pass if the route map names applied on each neighbor match the expected configuration.
* Failure: The test will fail if BGP peers are not configured or any neighbor has an incorrect or missing route map in either the inbound or outbound direction.

Fixes #785

Checklist:

• [X] My code follows the style guidelines of this project
• [X] I have performed a self-review of my code
• [X] I have run pre-commit for code linting and typing (pre-commit run)
• [ ] I have made corresponding changes to the documentation
• [X] I have added tests that prove my fix is effective or that my feature works
• [X] New and existing unit tests pass locally with my changes (tox -e testenv)

[sonarcloud[bot]]

Quality Gate passed

Issues
1 New issue
0 Accepted issues

Measures
0 Security Hotspots
95.5% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarCloud