Feature Request: Add support for mTLS client authentication #388
Description
Is your feature request related to a problem? Please describe.
I am using mTLS client authentication on my reverse proxy when sharing services to the outside world for better security and protection from attackers. I don't want to solely rely on the security measures of the exposed software.
Unfortunately Abacus app does not support mTLS, thus I can't connect it to my reverse proxy.
Describe the solution you'd like
Add support for importing a mTLS client certificate and using this for REST requests to Firefly III.
Describe alternatives you've considered
Provide unsecured (i.e. no mTLS) access in local network and use a VPN.
Additional context
For example the openHAB iOS App supports mTLS client authentication.