docs: add currently supported features page to Enterprise tab - #744

Running Vale across on the following files affected by this PR:

- enterprise/supported-features.mdx

Attempting to initialize Vale linter...
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Attempting to run Vale spellcheck...
Vale spellcheck completed successfully.

enterprise/supported-features.mdx:
	- 33:3    Did you really mean 'Jira'?
	- 34:3    Did you really mean 'Jira'?
	- 55:4    Did you really mean 'Automations'?


Found 3 suggested changes across 1 files in 469.35ms