What does this PR do?

Improve repo

For resources

Description

Added a small definition about programming/coding playgrounds for making it understandable to beginners

Why is this valuable (or not)?

Copy the definition merged in #6822 into the rest of CONTRIBUTING files, opening a 3 weeks window to translate it by our comunity

Checklist:

• Read our [contribu

Describe the proposed change(s).

It seems to be available starting from Node v17. See also:
https://developer.mozilla.org/en-US/docs/Web/API/structuredClone

This action doesn't require debug mode. A user can optionally add it as a precondition to a keyboard shortcut if they so choose.

Whiskers' regex looks for <..> as opposed to tokenizing the input, so it is not able to detect truncated/mistyped input.

For example it can't detect that <!b is not terminated in<?b> X <!b Y </b>.

With some heuristics it could be improved: match for <?, <! and </ and only allow identifiers which are terminated with >, otherwise it is invalid.

_Originally posted by @axic in h

Some destructive operations have their confirmation behavior defaulting to "yes." We should default to "yes" when the behavior is non-destructive, e.g. creating a workspace, but we should default to "no" when it's something destructive, like deleting a user.