Adds support for multipart/form-data requests in the public api
allowing documents to be uploaded without having to perform a secondary
request.
Need to rollout further endpoints for envelopes and templates.
Need to change how we store files to not use `putFileServerSide`
Use the `select_account` prompt for SSO OIDC to avoid constantly asking
for credentials to be entered with a client has an existing session with
the SSO provider.
Allow organisations to manage an SSO OIDC compliant portal. This method
is intended to streamline the onboarding process and paves the way to
allow organisations to manage their members in a more strict way.
