Support to add postInstall hooks/scripts to the provisioning (ProjectSetup txt)

[Remi749]

Describe the solution you'd like
Support to add Hooks to the provisioning. Both GET/POST HTTP requests should be supported.

This will enable customers to start GET/POST HTTP requests at the end of the project setup process.

• Ex: Trigger API's, Flows, Logic Apps, Azure Functions, etc...
• Support pending requests (202)

https://github.com/Puzzlepart/sp-js-provisioning

Example:

{
  "Hooks": [
    {
      "Title": "Get something from API: X",
      "Url": "https://example.com/get/X",
      "Method": "GET",
      "Headers": {
        "Content-Type": "application/json",
        "Cache-Control": "no-cache"
      }
    },
    {
      "Title": "Trigger logic app: X",
      "Url": "https://example.com/trigger/X",
      "Method": "POST",
      "Headers": {
        "Content-Type": "application/json",
        "Cache-Control": "no-cache"
      },
      "Body": { 
        "Body goes here"
      }
    }
  ]
}

Relevant issue:
Puzzlepart/sp-js-provisioning#1

[Remi749]

The pieces are starting to fall into place here. Hooks are running (GET/POST) and error handling is almost finished. Here are som example of what happens if some hooks fail:

Example template with hooks:

[Remi749]

PR created in sp-js-provisioning:
Puzzlepart/sp-js-provisioning#2

[Remi749]

sp-js-provisioning has been updated to: v1.1.2 to include hooks