Interpreter: Add bitwise operators

Also, negation is unary, not binary.

Change-Id: Ic7c5a6f2ee0b2bbda89eef62999e4ebbc97dca12
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/243161
Reviewed-by: Ethan Nicholas <ethannicholas@google.com>
Commit-Queue: Brian Osman <brianosman@google.com>
2 files changed