Add Search Function for Prescription

[Requiem49]

Description

• Search API endpoint /api/search/
• Reads data from records.json in data_mockup/
• Filters by doctor or prescription name
• Tested via frontend search bar integration

Fixes # (issue)

Type of change

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• This change requires a user documentation update
• This change requires a container update
• This change is dependent on other pull requests

Checklist:

• Code formatting standard applied
• I have performed a self-review of my code
• Code commented and documented
• New and existing unit tests pass locally with my changes
• Manual testing completed

[tyler-gonsalves]

Closes #5 #6 #7