Add Google Antigravity to the installer script

Author: AgenttiX

apt/setup_sources.sh

@@ -44,6 +44,10 @@ echo \
 wget -O- https://app.eduvpn.org/linux/v4/deb/app+linux@eduvpn.org.asc | gpg --dearmor | tee /usr/share/keyrings/eduvpn-v4.gpg >/dev/null
 echo "deb [arch=$(dpkg --print-architecture) signed-by=/usr/share/keyrings/eduvpn-v4.gpg] https://app.eduvpn.org/linux/v4/deb/ plucky main" | tee /etc/apt/sources.list.d/eduvpn-v4.list
 
+# Google Antigravity
+curl -fsSL https://us-central1-apt.pkg.dev/doc/repo-signing-key.gpg | gpg --dearmor --yes -o /etc/apt/keyrings/antigravity-repo-key.gpg
+echo "deb [signed-by=/etc/apt/keyrings/antigravity-repo-key.gpg] https://us-central1-apt.pkg.dev/projects/antigravity-auto-updater-dev/ antigravity-debian main" | tee /etc/apt/sources.list.d/antigravity.list > /dev/null
+
 # Intel oneAPI
 # https://www.intel.com/content/www/us/en/developer/tools/oneapi/hpc-toolkit-download.html
 wget -O- https://apt.repos.intel.com/intel-gpg-keys/GPG-PUB-KEY-INTEL-SW-PRODUCTS.PUB | gpg --dearmor | tee /usr/share/keyrings/oneapi-archive-keyring.gpg > /dev/null