Fixed bug in component checkins via api

[marcusmoore]

Description

This PR fixes a bug in component checkins via the api where a user could check in a quantity higher than was checked out if the checked out quantity was 1.

It also includes tests around the endpoint.

Type of change

• Testing

[what-the-diff]

PR Summary

• Improved checkin method in ComponentsController.php
  • The method's structure was streamlined by eliminating unnecessary spaces and merging certain lines of code. This enhances the readability and ease of maintaining the code.
  • Enhanced comparison accuracy by replacing loose equality with strict equality. This ensures that only precise matches occur during the check-in process.
• Introduced ComponentCheckinTest.php
  • This addition ensures comprehensive testing of check-in operations via the API. It includes important checks for user permissions and component existence.
  • It has safeguards against users checking in more than the quantity they checked out.
  • It confirms that the correct processes are carried out during successful check-in.
  • It includes tests focusing on the support for multiple companies, ensuring that each company's operations remain within its respective parameters.
  • It checks that all check-in activities are properly recorded in the database.

[marcusmoore]

Gonna check one thing then move this back to ready.