simplify DAGGER modifiers in operators

[stylewarning]

This will simplify modifier chains such as:

DAGGER CONTROLLED DAGGER FORKED F(...) ...

by bringing DAGGERs to the front and canceling them out.

This commit also simplifies parameter arithmetic by eliding factors of one.

This also allows programs like

DAGGER DAGGER CPHASE(x) 0 1

to compile.

In order to accomplish this, we re-work where some of the simplification and the like happens.

[stylewarning]

Tests are "passing", but the golden test files are failing. I'll have to think about how I want to deal with this. Options are:

• Re-generate the golden tests.
• Don't apply the simplification transformation post-parsing, and let the golden tests just test raw parsing and nothing else.

[stylewarning]

from Quil meeting, there is general agreement to move optimization/simplification transforms to compiler-hook, possibly needing to regenerate the golden test files

[stylewarning]

@kilimanjaro @ecpeterson @notmgsk this is ready for review now