feat(scripts): Add Q CLI installation script (#823)

* feat(scripts): Add Q CLI installation script

Add comprehensive installation script for Q CLI that:
- Detects platform (macOS/Linux) and architecture
- Downloads appropriate package from release CDN
- Handles both glibc and musl Linux variants
- Provides interactive installation with progress feedback
- Includes cleanup of temporary files

🤖 Assisted by Amazon Q Developer

Author: kkashilk

bundle/linux/install.sh

@@ -140,14 +140,18 @@ if [ -n "${Q_INSTALL_GLOBAL:-}" ]; then
     install -m 755 "$SCRIPT_DIR/bin/qchat" /usr/local/bin/
     install -m 755 "$SCRIPT_DIR/bin/qterm" /usr/local/bin/
 
-    /usr/local/bin/q integrations install dotfiles
-    /usr/local/bin/q setup --global "$@"
+    if [ -z "${Q_SKIP_SETUP:-}" ]; then
+        /usr/local/bin/q integrations install dotfiles
+        /usr/local/bin/q setup --global "$@"
+    fi
 else
     mkdir -p "$HOME/.local/bin"
 
     install -m 755 "$SCRIPT_DIR/bin/q" "$HOME/.local/bin/"
     install -m 755 "$SCRIPT_DIR/bin/qchat" "$HOME/.local/bin/"
     install -m 755 "$SCRIPT_DIR/bin/qterm" "$HOME/.local/bin/"
 
-    "$HOME/.local/bin/q" setup "$@"
+    if [ -z "${Q_SKIP_SETUP:-}" ]; then
+        "$HOME/.local/bin/q" setup "$@"
+    fi
 fi