Add SQL query patterns documentation and Linux package build scripts

- Created `TV_SHOWS_SQL_QUERY_PATTERNS.md` to document SQL query patterns for TV shows, including performance issues and missing indexes.
- Added `README.md` for Linux package building, detailing steps for creating Debian and Red Hat packages.
- Implemented build scripts for Debian and Red Hat, including service files and post-installation hooks.
- Added necessary scripts for managing Jellyfin service lifecycle on both Debian and Red Hat systems.
- Included package specifications and installation instructions for both distributions.

scripts/redhat/preun.sh

@@ -0,0 +1,12 @@
+#!/bin/bash
+set -e
+
+# Jellyfin Pre-Uninstall Script (Red Hat)
+# Runs before package is removed
+
+# Stop service
+if command -v systemctl &> /dev/null; then
+    echo "Stopping Jellyfin service..."
+    systemctl stop jellyfin.service || true
+    systemctl disable jellyfin.service || true
+fi