feat: add rich parameters

[kylecarbs]

This adds support for a new coder_parameter type in Terraform which supports immutable, editable, and visually appealing parameters.

Examples:

Exposing the variable syntax in Terraform will become deprecated, and users will be forced to adopt the coder_parameter data source. Here's an example of the syntax:

data "coder_parameter" "example" {
  name = "Example"
  type = "string"
  option {
    name  = "First Option"
    value = "first"
  }
  option {
    name  = "Second Option"
    value = "second"
  }
}

Todo:

• Update the create CLI to work with the new parameters.
• Show a "deprecated" message in the UI with instructions to switch to new parameters.
• Convert example templates to use the new parameter type.
• Edit the "workspace create" UI to be prettier!

[github-actions]

This Pull Request is becoming stale. In order to minimize WIP, prevent merge conflicts and keep the tracker readable, I'm going close to this PR in 3 days if there isn't more activity.

[kylecarbs]

This PR has risen from the depths 👀

[github-actions]

This Pull Request is becoming stale. In order to minimize WIP, prevent merge conflicts and keep the tracker readable, I'm going close to this PR in 3 days if there isn't more activity.

[github-actions]

This Pull Request is becoming stale. In order to minimize WIP, prevent merge conflicts and keep the tracker readable, I'm going close to this PR in 3 days if there isn't more activity.

[dcarrion87]

Noooooo! I hope this is still a thing?

[onlycs]

@bpmct

[kylecarbs]

This is still a thing! Holiday stale bot!

[github-actions]

This Pull Request is becoming stale. In order to minimize WIP, prevent merge conflicts and keep the tracker readable, I'm going close to this PR in 3 days if there isn't more activity.

[ammario]

@mtojek — you're taking this now, right?

[mtojek]

@mtojek — you're taking this now, right?

Yes, once I'm done with the task I'm working on at the moment - #3522.

I haven't started this one, just skimmed through the PR to understand the scope. We have a call about it tomorrow.

[github-actions]

This Pull Request is becoming stale. In order to minimize WIP, prevent merge conflicts and keep the tracker readable, I'm going close to this PR in 3 days if there isn't more activity.

[dcarrion87]

Bump for reopen.

[kylecarbs]

@dcarrion87 this is being implemented in chunks now! Follow #5574 instead.