release: 12.1.0

[ematipico]

Summary

This PR, other than updating the version numbers, does the following:

• updates the --help prompts of the various commands;
• update the configuration.mdx page with the new properties (vcs);
• it updates the linter.mdx page to add the total number of rules Rome currently has;
• creates a new section under Reference for the VSCode extension. The content is a copy-paste of the README.md we have in the library. This should help with the documentation :)
• updated the language_support.mdx section with Typescript 5.0
• fixed an issue where playground styles were not correctly applied
• added Import Sorting to the playground
• schemas are now generated from this very website
• the rome init command will write new URL for the schema

Test Plan

Preview website

Changelog

• The PR requires a changelog line

Documentation

• The PR requires documentation
• I will create a new PR to update the documentation

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[github-actions]

Parser conformance results on ubuntu-latest

js/262

Test result	main count	This PR count	Difference
Total	48863	48863	0
Passed	47796	47796	0
Failed	1067	1067	0
Panics	0	0	0
Coverage	97.82%	97.82%	0.00%

jsx/babel

Test result	main count	This PR count	Difference
Total	40	40	0
Passed	37	37	0
Failed	3	3	0
Panics	0	0	0
Coverage	92.50%	92.50%	0.00%

symbols/microsoft

Test result	main count	This PR count	Difference
Total	6212	6212	0
Passed	1763	1763	0
Failed	4449	4449	0
Panics	0	0	0
Coverage	28.38%	28.38%	0.00%

ts/babel

Test result	main count	This PR count	Difference
Total	639	639	0
Passed	573	573	0
Failed	66	66	0
Panics	0	0	0
Coverage	89.67%	89.67%	0.00%

ts/microsoft

Test result	main count	This PR count	Difference
Total	17224	17224	0
Passed	13127	13127	0
Failed	4097	4097	0
Panics	0	0	0
Coverage	76.21%	76.21%	0.00%