Floss: rework `force_cvsd` to `disabled_codecs`

We used to have a parameter in `ConnectAudio` during SCO creation to
force using CVSD.

In this CL, we extend it so that we can force un/using certain codecs,
along with the new codec, LC3.

This should be landed only after https://crrev.com/c/4574163.

Bug: 269970706
Tag: #floss
Test: emerge-brya floss
Change-Id: Ie23ee2eff052a8c313c58d9da2c5032a6a4de614