feat: add TokenAuth class for token-based authentication

[victorvhs017]

This PR adds token auth support for the Python SDK.

This is valid for machine identity tokens and user tokens.

Test it using the method:

client.auth.token_auth.login(token="<your-token>")

[greptile-apps]

Greptile Overview

Greptile Summary

Added TokenAuth class providing direct token-based authentication for the Python SDK. This enables users to authenticate using pre-existing machine identity tokens or user JWT tokens via client.auth.token_auth.login(token).

• New TokenAuth class added to infisical_sdk/resources/auth_methods/token_auth.py with a simple login method that sets the token directly
• Auth class updated to include token_auth as an authentication option
• Unlike other auth methods that make API calls to exchange credentials for tokens, this method directly sets the provided token without server-side validation
• Note: The return type (str) differs from other auth methods which return MachineIdentityLoginResponse - this is intentional since no API call is made

Confidence Score: 4/5

• This PR is safe to merge with minimal risk - adds a simple authentication wrapper with no complex logic
• Score reflects straightforward implementation following existing patterns. Minor style suggestion about unused parameter, but no functional or security issues identified.
• No files require special attention

Important Files Changed

File Analysis

Filename	Score	Overview
infisical_sdk/resources/auth_methods/token_auth.py	4/5	New TokenAuth class for direct token authentication. The requests parameter is stored but unused.
infisical_sdk/resources/auth.py	5/5	Added TokenAuth import and instantiation in the Auth class, following existing patterns.
infisical_sdk/resources/auth_methods/init.py	5/5	Added TokenAuth to module exports.

[greptile-apps]

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