Add `pixel-scroll-precision` and `pixel-scroll-start-momentum` to `ccm-ignored-commands` defaults

[MegaJ]

Hi, with (pixel-scroll-precision-mode) on which came built into emacs 29 (or something), I think adding these two commands as a default in the package would make sense. You already have drag and scroll commands in there.

(adding momentum command is nice otherwise you get a jarring bounce back).

What do you think? Love this neat package, been getting good use out of it.