feat(devices): add wired GameSir G7 Pro telemetry support

[BANANASJIM]

Add an experimental GameSir G7 Pro Amazon wired (3537:10ba) telemetry config with four pre-remap extra buttons, based on the pinned protocol. Reuses the physical writer for timed F2 heartbeat packets, following the reference 1–255 sequence. Uses existing report suffix matching; no mask extension or onboard profile writes.

Validation: independent raw-report and 257-packet writer fixtures, fake-clock, lifecycle and input-priority regressions; full Debug, ReleaseSafe, TSAN, config validation and documentation build passed.

Hardware has not been tested here. Requires libusb and explicit --config. The reference session also queries profile/firmware every two seconds; this F2-only route has not established heartbeat necessity or sufficiency. Automatic discovery is not provided by this config; stick direction/centering and mappings need hardware confirmation. Other editions, receivers, 8K, rumble and IMU are outside scope. Kept as draft.

Related: #519.

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