* feat: add helper funcs to get symbol info from /proc/kallsyms

* feat: introduce fixed executor that always runs funcs from the same os thread

* feat: add probe manager to handle building tracing kprobes from tk-btf ones

* feat: define probe events with corresponding alloc and release funcs

* feat: embed stripped btf files and add helper funcs to read them

* feat: add fsnotify, fsnotify_nameremove, fsnotify_parent and vfs_geattr tk-btf probe builders in probe manager

* feat: implement path traverser to produce monitor events by walking a path

* feat: implement directory entries cache

* feat: implement event processor to process probe events and based on directory entry cache emit the respective event

* feat: implement event verifier that validates that the expected sequence of generated fs events are properly emitted

* feat: add perfChannel to reduce tracing.PerfChannel boilerplate code and satisfy testing needs

* feat: implement monitor that ties together path traverser, perf channel and event emitting

* feat: implement probe verification at runtime and the creation of a new monitor based on these

* feat: implement event reader for kprobe-based file integrity module

* doc: update NOTICE.txt to include tk-btf license

* feat: add tests for non-recursive kprobe fim (#3)

* fix: remove existing file from cache when a move operation is overwriting it

* feat: introduce force_backend in for file integrity auditbeat module

* ci: add necessary volume mounts for kprobes backend in auditbeat docker-compose.yml

* feat: add the instantiation of file integrity module with kprobes backend

* doc: update CHANGELOG.next.asciidoc

* fix: address compilation issues for non-linux oses

* fix: correct folder permission for path traverser unit-test

* fix: build kprobe package and unit-tests only for linux

* ci: extend test_file_integrity.py to test kprobes backend of file integrity module

* ci: extend TestNew in monitor to include actual file changes

* ci: mark with nolint prealloc slices that can't be pre-allocated

* chore: inline defer funcs

* fix: return the scanner error if any

* fix: remove redundant runtime os checks for linux

* doc: comment that dEntryCache is not thread-safe

* fix: set the appropriate verbosity of errors of watcher

* fix: check for scanner.Err and return err from parsing mountinfo lines

* fix: remove redundant fim_backends list from test_file_integrity.py

* fix: gofumpt kprobes package

* fix: highlight unused context in event processor

* fix: increase interval period of wait_output as kprobes require more time to verify the probes and print output

* fix: proper formatting for auditbeat.reference.yml

* fix: proper formatting for x-pack/auditbeat/auditbeat.reference.yml

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Co-authored-by: Maxwell Borden <Tacklebox@users.noreply.github.com>