feat: support token via query param or input key

[AubreyHewes]

Hi, I could not find if this issue has been discussed before.

Synopsis

Currently this project only supports sending the access token via authorization header (bearer token). I have a use case where we also need to support sending the access token via query param / form input.

Solution

This PR allows sending the access token via a get query param or from the input data. The solution is based on the default Laravel TokenGuard.

• Supports sending the access token via a query param (default api_token)
• Supports sending the access token via an input param (default api_token) - i.e. a form post

The api_token param can be set via the configuration using the key input_key.

Could have

Possibly can be enhanced to allow disabling (or opt in) via config.

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Fixes #63