Update some compiler options

[som-snytt]

Updated for a few major features.

It would be nice to automate or at least automatically verify.

[julienrf]

Thank you very much @som-snytt! The changes look good to me, but I would like someone from the Scala 3 compiler team to also have a look at them.

[prolativ]

If we want to keep things ordered alphabetically, then -Vdebug, -Vlog:<phases> and -Wself-implicit should be moved. Otherwise LGTM

[som-snytt]

Improved alphabetic order, added new options (they keep adding options), removed old aliases as a matter of policy.

Checked order against scalac -help, scalac -V, etc.

Tragically, I moved -V and -W to the front and lost the useful diff. Sorry about that.

Worth motivating that order, aside from the alphabet. As a user, I want more info (-V) or maybe more safety (-W). If I'm an advanced user, I might use an advanced option (-X). In the privacy of my own home or cubicle, I might add a private option (-Y) if no one is looking over my shoulder.

[julienrf]

Thank you!