feat(docs): Add easing links

[louismaximepiton]

Related issues

Closes #3363

Description

Proposal to add easing links at the top of every page for people willing to help:

• For issues
• For discussions

Also add an easy to fill issue template.

Questions

If we plan to merge it, maybe better the a11y of these buttons, better the icons, add discussion templates

Checklists

• I have read the contributing guidelines
• My change follows the developer guide
• My change follows the page structure defined in [OUDS] Create a component page template for the doc #3045
• Title and DOM structure is correct
• Links have been updated (title change impacts links for example)

Progression (for Core Team only)

• Code review
• Commit on ouds/main following conventional commit

Live previews

• https://deploy-preview-3356--boosted.netlify.app/docs/components/buttons

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[MaxLardenois]

I do not have a strong opinion but while I think "report a bug" and "ask a question" should be easily findable and on every pages, I'm not sure this is the right position for them.

[louismaximepiton]

TBH, I was thinking of floating buttons or something like that, but it can cause much a11y issues, do you have anything in mind ?