tp: mark the machine-wide counter types machine-scoped

Marks the counter types that describe the device itself, with
device-only dimensions and values that are instantaneous or counted
since boot: CPU frequency, limits, throttle, idle, utilization,
capacity and nr_running; GPU frequency and memory; clock frequency and
state; thermal and cooling devices; ION and DMA heap totals; battery
counters, status, plug type, screen state and battery stats; kernel
wakelocks; entity state residency; energy breakdown; and the sys_stats
memory, pressure (PSI), CPU time, IRQ, fork and buddyinfo counters.
Merged traces of one machine now share one track for each. Power
rails, disk stats, network counters and per-process or per-UID series
stay per trace. The bugreport parser uses the shared battery status
blueprint, so its battery history shares that track too. Most of the
diff is re-indentation from the wrapper (see git diff -w).

Adds zip diff tests for the merge edge cases: overlaps, chains,
consecutive traces with archive order unlike time order, ties, CPU-per-
UID handovers, GPU work periods, kernel wakelocks, a bugreport battery
history, one track for every machine-scoped type, and guards for merges
that share no data.