Implement button that removes repo from suggestion list

[SAN-MUYUN]

Summary:

Type of change:

• ✨ New Feature/ Enhancement

Changes Made:

Included a hidden button on the right of the repo menu to remove the corresponding repo from suggestion, which includes removing it from local storage. This button is only displayed when hovering over the repo button. Button darkens when hovered over, to prevent clicking it accidentally.

Screenshots:

Before:

After:

On hover over the repo button, the remove button is shown

Button darkens when it is hovered over (mouse cursor is not recorded in screenshot)

On click, corresponding suggested repo is removed. Suggestion is removed from local storage as well.

Proposed Commit Message:

Add a remove button that remove the corresponding repo from suggestion
list

Currently, there are functions that add and switch between different
repos through the header. But cannot remove repos which are
added by mistake.

Let's add a button for each suggested repo that removes it from
the list of suggestions.

Checklist:

• I have tested my changes thoroughly.
• I have created tests for any new code files created in this PR or provided a link to a issue/PR that addresses this.
• I have added or modified code comments to improve code readability where necessary.
• I have updated the project's documentation as necessary.