New make:auth option to generate an entire login form + features & fixes

This is a BIG release that I'm thrilled to say was powered entirely by community contributions!

The big features are related to security: make:auth now updates your security.yaml file and can also generate an entire, functional login form system. Highlights:

make:auth can now generate an entire form login system with
authenticator, login form and controller! #266 thanks to @nikophil

make:auth now registers your guard authenticator in your security.yaml
file automatically - #261 thanks to @nikophil

Generate more explicit voter attribute names - #283 thanks to @lyrixx

Fixing incorrect dependency for make:crud - #256 thanks to @ckrack

Fix self-referencing relation issue - #278 thanks to @codedmonkey

Fix edge-case bad template name in make:crud - #286 thanks
to @thlbaut