add option to remove snaps

src/commands/system-setup/4-remove-snaps.sh

@@ -0,0 +1,28 @@
+#!/bin/sh -e
+
+. ./common-script.sh
+
+removeSnaps() {
+    case $PACKAGER in
+        pacman)
+            sudo ${PACKAGER} -Rns snapd
+            ;;
+        apt-get|nala)
+            sudo ${PACKAGER} autoremove --purge snapd
+            if [ "$ID" = ubuntu ]; then
+                sudo apt-mark hold snapd
+            fi
+            ;;
+        dnf)
+            sudo ${PACKAGER} remove snapd
+            ;;
+        zypper)
+            sudo ${PACKAGER} remove snapd
+            ;;
+        *)
+            echo "removing snapd not implemented for this package manager"
+    esac
+}
+
+checkEnv
+removeSnaps