(feat): Add isLatLong API route and function

[cbanlawi]

Purpose

• This PR implements the isLatLong validation endpoint and tests with support for the optional checkDMS flag using a checkbox in the UI.
• The checkbox allows users to validate DMS (degrees, minutes, seconds) coordinates without modifying the input string (e.g., not requiring "34°3'8.1"N 118°14'37.2"W, true").

Screen Recordings

Functionality:
https://github.com/user-attachments/assets/2c7e26a8-c405-439f-9866-235c406ee0de

Docs:
https://github.com/user-attachments/assets/e18de560-6076-407a-bea6-86b463f6901c

[MahdadGhasemian]

Hi @cbanlawi
Thanks for your contribute!

Please update your PR to only include changes relevant to the functionality you've worked on.
Avoid unrelated changes like converting double quotes (") to single quotes ('), as they make the diff harder to review.

Also, for better contributing and transparency, please include test results. A few screenshots from your local testing would be very helpful.

Thanks again!

[cbanlawi]

Hi @cbanlawi

Thanks for your contribute!

Please update your PR to only include changes relevant to the functionality you've worked on.

Avoid unrelated changes like converting double quotes (") to single quotes ('), as they make the diff harder to review.

Also, for better contributing and transparency, please include test results. A few screenshots from your local testing would be very helpful.

Thanks again!

Hi @MahdadGhasemian, my PR is not yet ready for review, but thanks for the feedback!