## Description
Mutual TLS, or mTLS for short, is a method for mutual authentication.
mTLS ensures that the parties at each end of a network connection are
who they claim to be by verifying that they both have the correct
private key.
This PR adds support for mTLS for postgres datasource. Unlike the
standard way of storing the certs in disk, we store them in the
database. This has been achieved via the custom implementation of SSL
Factory. The postgres driver support passing the custom ssl factory
while creating connection, which then will be used for handling and
establishing the connection.
#### PR fixes following issue(s)
Fixes#31326
#### Type of change
- New feature (non-breaking change which adds functionality)
## Testing
#### How Has This Been Tested?
- [ ] Manual
#### Test Plan
> Add Testsmith test cases links that relate to this PR
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#### Issues raised during DP testing
> Link issues raised during DP testing for better visiblity and tracking
(copy link from comments dropped on this PR)
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## Checklist:
#### Dev activity
- [ ] My code follows the style guidelines of this project
- [ ] I have performed a self-review of my own code
- [ ] I have commented my code, particularly in hard-to-understand areas
- [ ] I have made corresponding changes to the documentation
- [ ] My changes generate no new warnings
- [ ] I have added tests that prove my fix is effective or that my
feature works
- [ ] New and existing unit tests pass locally with my changes
- [ ] PR is being merged under a feature flag
#### QA activity:
- [ ] [Speedbreak
features](https://github.com/appsmithorg/TestSmith/wiki/Guidelines-for-test-plans#speedbreakers-)
have been covered
- [ ] Test plan covers all impacted features and [areas of
interest](https://github.com/appsmithorg/TestSmith/wiki/Guidelines-for-test-plans#areas-of-interest-)
- [ ] Test plan has been peer reviewed by project stakeholders and other
QA members
- [ ] Manually tested functionality on DP
- [ ] We had an implementation alignment call with stakeholders post QA
Round 2
- [ ] Cypress test cases have been added and approved by SDET/manual QA
- [ ] Added `Test Plan Approved` label after Cypress tests were reviewed
- [ ] Added `Test Plan Approved` label after JUnit tests were reviewed
<!-- This is an auto-generated comment: release notes by coderabbit.ai
-->
## Summary by CodeRabbit
- **New Features**
- Enhanced the Postgres plugin to support SSL certificate validation for
secure database connections. Users can now select between `VERIFY_CA`
and `VERIFY_FULL` modes for SSL verification, ensuring a higher level of
security for database communications.
<!-- end of auto-generated comment: release notes by coderabbit.ai -->
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