webhook subscription target URLs: Add textarea in project settings view

[jayanth-kumar-morem]

webhooksubscriptions: Add textarea input for target URLs

• Create a new form obj WebhookSubscriptionArea
• Include WebhookSubscriptionArea in ProjectSettingsForm
• Initial value is "\n" separated list of URLs retrieved using project.websubscriptions.all()
• While submitting form
  • Check if websubscriptions input already is not None or ""
  • Delete all existing WebhookSubscription objects for the project
  • Create new WebhookSubscription objects for each URL in the input
  • Delete webhooksubscriptions key from config dict to avoid saving it in settings model

UI updates

https://github.com/nexB/scancode.io/assets/64846852/5bd1c392-49fb-40f6-a45e-3ffa914b1e9c

Fixes: #1027

[tdruez]

@jayanth-kumar-morem The WebhookSubscription is not related to the project inputs but rather to the Project itself. The Webhook management does not belong to the "Inputs" related parts of the UI.

[jayanth-kumar-morem]

Ack @tdruez

so, on create project page, I'll place it below the execute now check box And on the specific project page, I'll add a modal beside, Add inputs and Add pipeline boxes

Will that be fine ?

[tdruez]

@jayanth-kumar-morem I don't think we want to complexify the "project creation" on form with webhook management for now. Also, a new box along inputs and pipelines on the projetc details view will not be ideal. I think we should start with adding the Webhook management in the project settings view for now.

[jayanth-kumar-morem]

@tdruez Requesting for code review

[tdruez]

The Webhook system and models were enhanced in https://github.com/nexB/scancode.io/pull/1338 Closing.