[FEATURE] Improve Issue template

[loomlike]

Description

Add a section to the Issue template for asking if the issue-creator can contribute to fix the issue / add features or not.
With this, we can either expect the creator will be working on the issue or not.

Expected behavior with the suggested feature

When someone is creating a new issue, show the following section:

### Willingness to contribute
[ ] Yes, I can contribute for this issue independently.
[ ] Yes, I can contribute for this issue with guidance from Recommenders community.
[ ] No, I cannot contribute at this time.

[loomlike]

@miguelgfierro @anargyri let me know if this makes sense.

[miguelgfierro]

this is interesting, it might help to attract more contributors

[SimonYansenZhao]

I like your idea @loomlike