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)

wrapper.sh

@@ -0,0 +1,15 @@
+#!/bin/sh
+# SPDX-License-Identifier: AGPL-3.0-or-later
+# In-container launcher for Plex Media Server. Sets LD_PRELOAD only for the
+# final exec so the (musl) PMS process is preloaded without affecting glibc
+# helper children (Tuner, Script Host, transcoders).
+
+set -eu
+
+export PLEX_MEDIA_SERVER_INFO_VENDOR="$(grep ^NAME= /etc/os-release | awk -F= '{print $2}' | tr -d '"')"
+export PLEX_MEDIA_SERVER_INFO_MODEL="$(uname -m)"
+export PLEX_MEDIA_SERVER_INFO_PLATFORM_VERSION="$(grep ^VERSION= /etc/os-release | awk -F= '{print $2}' | tr -d '"')"
+
+export LD_PRELOAD="/usr/lib/plexmediaserver/lib/plexmediaserver_crack.so"
+
+exec "/usr/lib/plexmediaserver/Plex Media Server" "$@"