implement create region in graphql

[sudan45]

Addresses

• Implement Graphql mutation for region #1447
• Implement graphql mutation node for publish regions #1453

Changes

• implemented graphql of create region

This PR doesn't introduce any:

• temporary files, auto-generated files or secret keys
• n+1 queries
• flake8 issues
• print
• typos
• unwanted comments

This PR contains valid:

• tests
• permission checks (tests here too)
• translations

The base branch was changed.

[susilnem]

Let's verify with the client If field project is mandatory or not.

[sudan45]

Suggested change

	if admin_level_qs is None:
	error_data.append('AdminLevel does\'t exist')
	elif admin_level_qs.region.created_by != info.context.user:
	error_data.append('Region Owner can delete admin level ')
	elif admin_level_qs.region.is_published:
	error_data.append('Published region can\'t be changed. Please contact')
	if admin_level_qs is None:
	error_data.append("AdminLevel does't exist")
	elif admin_level_qs.region.created_by_id != info.context.user.id:
	error_data.append('Only region owner can delete admin level ')
	elif admin_level_qs.region.is_published:
	error_data.append("Published region can't be changed. Please contact system admin")

[sudan45]

Suggested change

	else:
	admin_level_qs.delete()
	return DeleteAdminLevel(errors=None, ok=True)
	return DeleteAdminLevel(errors=[
	dict(
	field='nonFieldErrors',
	messages=error_data
	)
	], ok=False)
	if error_data:
	return DeleteAdminLevel(errors=[
	dict(
	field='nonFieldErrors',
	messages=error_data
	)
	], ok=False)
	admin_level.delete()
	return DeleteAdminLevel(errors=None, ok=True)

[sudan45]

Confirm with @subinasr to check error response in required format

[thenav56]

@subinasr Please squash and merge this hae... Lots of comments are review fixes.