New Resource: Waypoint Application Template

[catsby]

Adds new resource hcp_waypoint_application_template.
Example config:

resource "hcp_waypoint_application_template" "template" {
  name = "some test app template"
  summary = "some summary for fun"
  terraform_no_code_module = {
    source  = "some source"
    version = "some version"
  }
  terraform_cloud_workspace_details = {
    name                 = "some name"
    terraform_project_id = "some id"
  }
}

(Note that this is a draft while I figure out a test failure)

Tests:

$ make testacc TESTARGS='-run=TestAccWaypoint_Application_Template_basic'

...

[HenryEstberg]

I left one comment about summary being computed vs required that you should look at before merging but everything else looks good.

[briancain]

🚀 Let's goooo

[catsby]

@hashicorp/cloud-foundations please take a look when you can, the Waypoint team has approved this