Include gnuplot terminal dependencies in setup.sh

setup.sh

@@ -41,6 +41,15 @@ install-rsync() {
     sudo apt install -y rsync
 }
 
+
+install-dpkg() {
+    local pkg=$( dpkg -s "$1" | grep "Status: install ok installed" )
+    if [ -n "$pkg" ]; then
+        return 0
+    fi
+    sudo apt install "$1"
+}
+
 install-gnuplot() {
     # TODO: check minimum required version
     local cmd=$( command -v gnuplot )
@@ -71,4 +80,7 @@ install-just
 install-make
 install-ssh
 install-rsync
-install-gnuplot
\ No newline at end of file
+install-gnuplot
+install-dpkg libcairo2-dev
+install-dpkg libfreetype-dev
+install-dpkg libgd-dev