Wappler Resource Manager: Ability to add multiple provider identities of the same provider

Wappler Resource Manager: Ability to add multiple provider identities of the same provider

E.g.: Add multiple Hetzner accounts (API keys) to the same project

Reason: Separation of Production and Staging/Development servers, so not all people in the team have access to the Production server/Hetzner API key

The following feature request needs to be implemented first for the above to work: