Replace patchelf crack with Freeloader LD_PRELOAD approach

- Multi-stage Dockerfile: discover patterns from PMS binary (capstone),
  compile .so with zig (musl), layer onto lscr.io/linuxserver/plex
- Uses LD_PRELOAD instead of patchelf (which corrupts Plex's musl loader)
- Auto-discovery: broad structural patterns with string-anchored fallback
  (//feature) and relationship-based fallback (BITSET_REF within BS_INIT)
- hook.cpp uses __has_include for generated patterns with hardcoded fallbacks
- Custom wrapper.sh (no traffic_logger preload)
- Vendored Freeloader source (github.com/authrequest/Freeloader, AGPL-3.0)
- Removed stale plexmediaserver_crack.so binary
- Supports Plex 1.43.3+ (verified against 1.43.2 and 1.43.3)

Freeloader/.gitattributes

@@ -0,0 +1,9 @@
+# Linux-targeted project: keep everything LF in the repo and on checkout.
+# The /bin/sh + python launchers MUST stay LF or they break on the Plex host.
+* text=auto eol=lf
+*.sh  text eol=lf
+*.py  text eol=lf
+*.cpp text eol=lf
+*.hpp text eol=lf
+*.c   text eol=lf
+*.h   text eol=lf