[OUDS] Add the Bootstrap compatibilities in the doc and the code

[louismaximepiton]

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Related issues

NA

Description

Remaining tasks and questions

⚠️ Questions:

• .

Tasks:

Done list

The following was done in the PR:

• Removed all the TODO LM occurrences by solving them or postponing for future us.
• Added some missing OUDS mod
• Removed entirely _colored-links.scss
• Rewrite all Scss maps for Bootstrap compatibility with colors that we determined alltogether
• Use correct CSS variables when they exist
• Add all CSS variables related to colors inside Bootstrap compatibility
• Adapted all the utilities in order to be more close to what should be rendered
• Removed border-opacity, text-opacity and bg-opacity
• Finished to adapt the Bootstrap variables to be sure that we have the right variables and the good rendering
• Tweaked a bit the colored bgs to be inside Bootstrap compatibility and use the good colors
• Adapted the CSS tests
• Changed all the Bootstrap color CSS variables by the OUDS ones
• Changed the shadows utilities
• Added floating labels docs
• Added all the missing documentation about how our color utilities are built
• Added and checked all the bootstrap compatibility
• Adapted our shortcodes

To be done after the PR is merged

• Check for all the Scss diff, and check that there is no missing OUDS mod

Motivation & Context

Types of change

• New feature (non-breaking change which adds functionality)

Live previews

• https://deploy-preview-2833--boosted.netlify.app/docs/helpers/color-background

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