Add support for TraceLoggingWrite from BPF programs

[Alan-Jowett]

Windows drivers can currently create free-form logging to ETW using the TraceLoggingWrite macro. Adding something like this to eBPF for Windows would greatly simplify the ability of BPF program developers to instrument their code for debugging.

Proposal:

1. Define new map type: BPF_MAP_TYPE_TRACELOG
2. Permit static initialization to set the provider GUID.
3. Port the TraceLoggingWrite macros.

Possible implementation:

1. Overload the existing ring buffer API to work with the new map type.
2. Implement static keys
3. Macro then packs the parameters into a flat buffer and calls the existing ringbuffer helper.

This would at the very least provide a pathway for BPF programs to be cross-plat, with a compile time switch to either emit the events to a BPF_MAP_TYPE_RINGBUF (Linux) or a BPF_MAP_TYPE_TRACELOG (Windows)