Meshery: [UI] Missing Adapter: Navigate user to Settings page

[leecalcote]

Current Behavior
When an adapter of a certain type is not connected, that type of service mesh is still listed in the sidebar nav (that's fine), but when the user clicks on that menu item, they are not shown anything or navigated anywhere.

Example:

Desired Behavior

1. Show the user a page stating that an adapter for this type of service mesh is not connected.
2. Prompt them to connect an adapter with a "Configure Adapter" button.
3. Navigate them to /settings#service-meshes when the "Configure Adapter" button is clicked. (relates to #670)

[leecalcote]

@Nikhil-Ladha given your familiarity with this area, this might be simple for you to tackle.

[Nikhil-Ladha]

Work mode on!

[leecalcote]

670 is related to this issue.

[Nikhil-Ladha]

670 is related to this issue.

Yeah, I saw that and was just going to mention the same ;)

[aayushdutt]

@Nikhil-Ladha Are you still working on this? Can I take this up?

[Nikhil-Ladha]

@Nikhil-Ladha Are you still working on this? Can I take this up?

Actually, I was but since you started to work on the other. I was waiting for your PR. But if you want you can take this up. No issues 👍🏼.