[Feature] Stop button for runner execution

[rsilvr]

Description

• Added a stop button to stop a runner execution before it finishes
• This implementation uses the same event logic of request cancellation
• As CancelToken API is deprecated in Axios, I migrated the request cancellation code to use the AbortController API

Contribution Checklist:

• The pull request only addresses one issue or adds one feature.
• The pull request does not introduce any breaking changes
• I have added screenshots or gifs to help explain the change if applicable.
• I have read the contribution guidelines.
• Create an issue and link to the pull request.

Closes #143
Closes #1444

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[helloanoop]

This is great!

Thank you @rsilvr !
Appreciate the effort in to move away from CancelToken and use AbortController api.