Add comprehensive tests for CMS, Gacha, Hackathon, IAM, and User Management endpoints

- Implemented tests for Events and Testimonials endpoints in `test-cms.sh`
- Added common functions and variables for API testing in `test-common.sh`
- Created tests for Mentor endpoints in `test-mentors.sh`
- Developed tests for Gacha endpoints in `test-gacha.sh`
- Established tests for Hackathon endpoints in `test-hackathon.sh`
- Implemented tests for Authentication endpoints in `test-auth.sh`
- Added tests for Roles and Permissions endpoints in `test-roles-permissions.sh`
- Created tests for Teams endpoints in `test-teams.sh`
- Developed tests for User Management endpoints in `test-users.sh`

.gitignore

@@ -13,3 +13,4 @@
 .env.development
 .env.staging
 .env.production
+**/**.log