Add number of vendors with link to vendor tab

[allisonking]

Closes https://github.com/ethyca/fidesplus/issues/1110

Description Of Changes

Screen.Recording.2023-09-22.at.5.47.11.PM.mov

Code Changes

• Refactor TcfModalContent which doesn't really need to be its own component anymore. This makes it easier to hoist tab state up one component, which allows us to open the modal with a tab preselected
• Adds a button which shows the number of vendors, and if you click on it, it will open the modal straight to the vendor tab
• Removes the "Manage prefereneces" links on stacks which make less sense now that it's in the banner
• Cypress test

Steps to Confirm

• Set up a TCF environment
• When you visit /fides-js-demo.html, you should see the banner pop up with a new button "View our # partners", where # is the number of systems + vendors you have in your data map.
• Clicking on the button should open the modal, dismiss the banner, and bring you straight to the vendor tab.

Pre-Merge Checklist

• All CI Pipelines Succeeded
• Issue Requirements are Met
• Update CHANGELOG.md

[cypress]

Passing run #4333 ↗︎

0	4	0	0	0
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Details:

Merge 5144b63 into d25a80a...
Project: fides	Commit: a8b245cb5c ℹ️
Status: Passed	Duration: 01:14 💡
Started: Sep 25, 2023 9:06 PM	Ended: Sep 25, 2023 9:07 PM

_{This comment has been generated by cypress-bot as a result of this project's GitHub integration settings.}

[eastandwestwind]

Looks great, just 2 nit questions!