Improve mock generation

[ThaminduDilshan]

Purpose

This pull request introduces improvements to the project's mock generation workflow and documentation. The main changes include splitting the mockery configuration into separate files for public and private interfaces, updating the Makefile to support these changes, and clarifying the documentation to reflect the new process.

Mock generation workflow enhancements:

• Added backend/.mockery.private.yml for private interface mocks and renamed backend/.mockery.yml to backend/.mockery.public.yml for public mocks, providing clearer separation and organization of mock configurations. [1] [2]
• Updated the Makefile to add a new mockery target that generates mocks using both configuration files, and included installation logic for the mockery tool with version management. [1] [2] [3] [4]

[Copilot]

Pull Request Overview

This PR improves the mock generation workflow by separating public and private interface configurations into distinct files, enhancing organization and clarity. The changes include splitting the mockery configuration, updating build targets, and documenting the new process.

• Split mockery configuration into separate files for public and private interfaces
• Added new Makefile target for streamlined mock generation using both configurations
• Updated documentation to reflect the new mock generation process

Reviewed Changes

Copilot reviewed 4 out of 4 changed files in this pull request and generated no comments.

File	Description
backend/.mockery.public.yml	Added comment for clarity and removed commented-out configuration for cache package
backend/.mockery.private.yml	New configuration file specifically for private interface mocks within packages
Makefile	Added mockery tool installation, version management, and new target for generating mocks
.github/copilot-instructions.md	Updated documentation to reflect the split configuration files and new make command