ui: add parameterized dispatch interface

[nicholascioli]

Closes #9313

This commit adds a new interface for dispatching parameteried jobs, if
the user has the right permissions. The UI can be accessed by viewing a
parameterized job and clicking on the "Dispatch Job" button located in
the "Job Launches" section.

(Note: This commit adds one dependency title-case for pretty printing of
meta names. This can be removed if necessary.)

Given the following configuration:

...
"Meta": {
    "traefik_service_name": "traefik",
    "another_optional_item": "item-default",
    "server_name": "server-name-1"
  },
"ParameterizedJob": {
  "MetaOptional": [
    "traefik_service_name",
    "another_optional_item"
  ],
  "MetaRequired": [
    "server_name"
  ],
  "Payload": "optional"
},
...

The following screenshots show the generated interface.

[hashicorp-cla]

All committers have signed the CLA.

[nicholascioli]

Is that failing test something that I can address? I don't know what is meant by Resource not accessible by integration...

[tgross]

Wow, thanks @nicholascioli! Just a heads up that it might take us a little bit to get to reviewing this one as we're in the middle of bringing on new UI folks who will want to have a say here.

I think the "resource not available by integration" is a GitHub Actions auth issue... it looks like that specific test needs a GitHub token but we don't want to expose those to PRs from the community. So don't worry about that for now.

[nicholascioli]

I cleaned up a few things that seemed inconsistent in both my changes and the interface. Updated screenshots are attached below:

[lgfa29]

Thank you for this wonderful feature PR @nicholascioli!

I flagged some issues that we found while reviewing, but most are small style changes. The main blockers is the lack of bas64 encoding of the payload and the use of originalTarget, which causes the form to fail on non-Firefox browsers.

You don't have to worry about making any of these changes, @JBhagat841 and I will work on them, but if you feel like tackling some of them before we do feel free to go ahead 😄

Thank you again for the contribution!

[ChaiWithJai]

LGTM, will take another look in the afternoon after we chat.

[ChaiWithJai]

LGTM

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