feat: implemented pass through feature for postgres parser

[EraKin575]

Related Issue

• Info about Issue or bug

Closes: #1148

Describe the changes you've made

Added a passthrough feature in postgres parser in case there is failure for matching mocks

Type of change

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Code style update (formatting, local variables)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• This change requires a documentation update

Please let us know if any test cases are added

Please describe the tests(if any). Provide instructions how its affecting the coverage.

Describe if there is any unusual behaviour of your code(Write NA if there isn't)

A clear and concise description of it.

Checklist:

• 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.

Screenshots (if any)

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[sweep-ai]

Apply Sweep Rules to your PR?

• Apply: All new business logic should have corresponding unit tests.
• Apply: Refactor large functions to be more modular.
• Apply: Add docstrings to all functions and file headers.

[Sarthak160]

@EraKin575 Please follow the proper commit semantics. You can refer this - https://www.npmjs.com/package/commitizen

[Sarthak160]

@EraKin575, In the if condition , ideally we should also handle the case if mocks are not loaded till then, so we should call the continue statement after the error handling of the passtrough. Please add that as well !

[Sarthak160]

@EraKin575 Since passthrough returns nil buffer we dont need to store it in a variable it's not good practice. And also please always do go mod tidy and proper linting practices before pushing any code. See the build logs it's failing because of the error package import but not used anywhere.

                 if !matched {
			_, err = util.Passthrough(clientConn, destConn, pgRequests, h.Recover, logger)
			if err != nil {
				logger.Error("failed to match the dependency call from user application", zap.Any("request packets", len(pgRequests)))
				return err
			}
			continue
		}

[Sarthak160]

LGTM