Updated segmented control with regards to issue #163

[Yash-Khattar]

Description:

In light mode, the color of the text in SegmentedControlWidget should change to white in order to be clearly visible on selection like the RadioChips, so I changed It.

Changes Made:

1. In file segment_control, I created a new method for buildSegmet so that it can change color of text depending upon the value of the selected element.
2. In file segment_control_screen and search_page, I made the necessary changes according to the new buildSegment function.

Related Issue:

Solved Issue #163

Screenshots/GIFs:

Before and After images

Checklist:

• [✅ ] The code follows the project's coding style guidelines.
• [✅ ] Unit tests have been added or updated to cover the changes.
• [✅ ] Documentation, if applicable, has been updated to reflect the changes.
• [✅ ] All new and existing tests pass successfully.

Please review and merge this PR at your earliest convenience.

This PR is in regard to GSSOC'23,

Thank you!

[Debajyoti14]

@Yash-Khattar Can you solve the conflicts and commit again?