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/post.sh

@@ -0,0 +1,37 @@
+#!/bin/bash
+set -e
+
+# Jellyfin Post-Installation Script (Red Hat)
+# Runs after package is installed
+
+# Create jellyfin user/group if not exists
+if ! id "jellyfin" &>/dev/null; then
+    echo "Creating jellyfin user and group..."
+    useradd -r -s /bin/false -d /var/lib/jellyfin jellyfin
+fi
+
+# Create necessary directories
+mkdir -p /var/lib/jellyfin
+mkdir -p /var/log/jellyfin
+mkdir -p /var/cache/jellyfin
+mkdir -p /etc/jellyfin
+
+# Set ownership and permissions
+chown -R jellyfin:jellyfin /opt/jellyfin
+chown -R jellyfin:jellyfin /var/lib/jellyfin
+chown -R jellyfin:jellyfin /var/log/jellyfin
+chown -R jellyfin:jellyfin /var/cache/jellyfin
+
+chmod 755 /opt/jellyfin
+chmod 750 /var/lib/jellyfin
+chmod 750 /var/log/jellyfin
+chmod 750 /var/cache/jellyfin
+
+# Enable and start service if systemd is available
+if command -v systemctl &> /dev/null; then
+    systemctl daemon-reload || true
+    systemctl enable jellyfin.service || true
+    echo "To start Jellyfin, run: sudo systemctl start jellyfin"
+fi
+
+echo "Jellyfin post-install complete!"