fix: Add eq UUID to filters

[ArthurFreeb]

Fixes #33

This pull request includes changes to support filtering by UUID in the app.go and app_test.go files. The most important changes include adding the uuid package, modifying the filtering logic to handle UUIDs, and updating the test cases accordingly.

Enhancements to UUID support:

• app.go: Added the uuid package to the import statements.
• app.go: Modified the Apply function to include a case for handling UUIDs in the filtering logic.

Updates to test cases:

• app_test.go: Added a personId field of type uuid.UUID to the User struct.
• app_test.go: Added a new test function Test_QueryWithFilterEqualsUUID to verify filtering by UUID.