feat: adding TagDiscovery panel feature (#494)

[EmanuelGF]

Reopening the PR after the accidental merge and reset of master as discussed in #500.

[EmanuelGF]

Reopened the PR after the accidental merge/reset.
Original discussion and review comments are in #500

[linkdotnet]

Taking over from the accidentially closed PR:

• The build is currently red
• We have to add a migration for the new property in the appsettings.json

[EmanuelGF]

Thanks for the heads up @linkdotnet ! I noticed there are some issues with the tests related to the new dependencies I introduced, so I’ll work on fixing those. I can also address the remaining review suggestions from the previous PR.

[EmanuelGF]

Addressed the remaining review suggestions given by @digitaldirk and fixed the failing tests related to the new dependencies. The Tag Discovery panel was also moved outside the navbar to prevent it from closing on resize. Can now be closed using escape key and display message when emply.

Have a great weekend!!

[linkdotnet]

Awesome - looking already good.

As we have a breaking change in the appsettings.json, we need a migration here: https://github.com/linkdotnet/Blog/tree/master/tools/LinkDotNet.Blog.UpgradeAssistant

Basically adding an entry in the ctor here: https://github.com/linkdotnet/Blog/blob/master/tools/LinkDotNet.Blog.UpgradeAssistant/MigrationManager.cs#L17

And adding the logic next to here: https://github.com/linkdotnet/Blog/blob/master/tools/LinkDotNet.Blog.UpgradeAssistant/Migrations/Migration_11_To_12.cs

[digitaldirk]

Awesome work, the issues and suggestions I had are fixed :)