TDL-27031: Add oauth option for authorization

[prijendev]

Description of change

• Add option of oauth for authorization.
• If auth_type is Basic then consider username/password.
• If auth_type is Oauth, then generate access_token from client_id/secret and consider it.

Manual QA steps

Risks

Rollback steps

• revert this branch

AI generated code

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• this PR has been written with the help of GitHub Copilot or another generative AI tool

[RushiT0122]

Suggested change

	if self.auth_type == "Basic":
	self.access_token = None
	else:
	self.access_token = get_access_token(self.username, self.password, URLS[(self.sandbox, self.european)])
	if self.auth_type == "Basic":
	self.access_token = None
	elif self.auth_type == "OAuth":
	self.access_token = get_access_token(self.username, self.password, URLS[(self.sandbox, self.european)])
	else:
	raise Exception("...")

[prijendev]

I think, this is not require as we are already checking any extra values over here

[RushiT0122]

I think we should have auth_type validation in the constructor as well to make it more fail safe in case we don't invoke it from here.

[prijendev]

Got it. Add validation in constructor as well