OpenTelemetry support and improved native memory profiler

v4.1

Experimental support for the OpenTelemetry profiling signal
- #1188: OTLP output format and dumpOtlp Java API
- #1336: JFR to OTLP converter
JDK 25 support
- #1222: Update VMStructs for JDK 25
Productize native memory profiling
- #1193: Full nativemem support on macOS
- #1254: Fixed Nativemem tests on Alpine
- #1269: Native memory profiling now works with jemalloc
- #1323: nativemem shows allocations inside async-profiler itself

#1174: Detect JVM in non-Java application and attach to it
#1223: Native API to add custom events in JFR recording
#1259: --all option to collect all possible events simultaneously
#1286: Record which CPU a sample was taken on
#1299: Skip last 10% allocations for leak detection
#1300: Allow profiling kprobes/uprobes with --fdtransfer
#1366: Rewrite jfrconv executable to shell
#1400: Unwind checksum and digest intrinsics on ARM64
#1357, #1389: VMStructs-based stack unwinding for alloc and nativemem profiling