Use GitHub templates for PRs, issues...

[lulivi]

It would be interesting to make use of Github Builtin Issues and Pull-requests templates and Contributing guidelines as well as modernize the Wiki with new content and entries.

[iblancasa]

Oh, it seems they changed the way to do this... we have the templates under the .github/ISSUE_TEMPLATE folder

[lulivi]

Yes, there is a new way, but we can use the templates under .github folder.

[iblancasa]

Useful repository: https://github.com/stevemao/github-issue-templates

[iblancasa]

@ManuelJNunez, can you take care of this issue? Thanks!

[ManuelJNunez]

This repository already contains PR and Issues templates under .github folder.

[iblancasa]

Yes, but we can improve the contributing.md file to include things like "how to run tests", "how to submit a change" or similar things (as explained in the links shared by @lulivi)

[ManuelJNunez]

We also could change the PULL_REQUEST_TEMPLATE to something like that:

<!--
:warning: Please, try to follow the template.
:warning: Your pull request title should be short, detailed and understandable for all.
:warning: If your pull request fixes an open issue, please link to the issue.
-->

### Summary


### Details and comments


### Checks

<!-- Change te space between the square brackets to an `x` -->
- [ ] I have updated the documentation accordingly.
- [ ] I have read the [CONTRIBUTING](https://github.com/rticommunity/rticonnextdds-examples/blob/develop/CONTRIBUTING.md) document.

[ManuelJNunez]

Why don't we delete (or rename) ISSUE_TEMPLATE.md so that we can use the issue templates in .github/ISSUE_TEMPLATE?

[iblancasa]

@ManuelJNunez ok, go ahead.

[lulivi]

totally makes sense