Refactor app-op access/reject counters

The last system was too confusing and caused bugs. The new system is
easier to understand.

This still uses the key which is the combination of uidState and
op-flags. I.e. now we collect access + rejection events for the
cross-product of
- package (parameter to noteOp)
- featureId (parameter to noteOp)
- op (parameter to noteOp)
- uidState of the package the noteOp was called
- opFlags (based on which app called the noteOp and how trusted this app
was)

uidState + opFlags are usually combined into the "key" variable.

This also unifies the APIs in Op*Entry to be the same of each data-field
of an op-entry.

Note: This temporarily breaks
com.android.server.appop.AppOpsActiveWatcherTest#testIsRunning as active
ops are not yet reported. This needs to be fixed by a follow up change.

Bug: 144997947
Test: atest --test-mapping services/core/java/com/android/server/appop/
Change-Id: I9844f9886b1c032d01de51bbb46267e3244b6da6