Adds endpoints for registering webhooks per project
Current triggers are on commit or branch creation
{
"projectId": "projectId",
"branchId": "branchId",
"event": "commit",
"payload": {{see CommitJson}}
}{
"projectId": "projectId",
"branchId": "branchId",
"event": "branch_created",
"payload": {{see RefJson}}
}