v0.12.0

This release expands symbolic analysis capabilities, introduces FlameGraph generation, and improves hardware event management through both runtime and compile-time support.

• Symbol Resolution: Instruction pointers captured during sampling can now be resolved to function names using perf::SymbolResolver (see the documentation).
• FlameGraph Export: Sampling data can be converted into formats compatible with visualization tools such as Brendan Gregg's FlameGraph, Speedscope, and flamegraph.com using perf::analyzer::FlameGraphGenerator (see the documentation).
• Built-in Event Definitions: A set of x86-specific hardware events is now bundled in events/x86 and can be loaded at runtime using perf::CounterDefinition. This serves as an alternative to the make perf-list target.
• Compile-time Event Injection: Processor-specific event definitions can now be embedded directly at build time by configuring CMake with -DGEN_PROCESSOR_EVENTS=1. These are immediately available via perf::CounterDefinition (see the documentation).
• Automatic Event Discovery: Additional event types–including RAPL energy counters and AMD IO MMU events–are now automatically detected during the creation of a perf::CounterDefinition instance (issue #6).