feat(deck): Enhance and fix zram and deckswap scripts (#512)

* fix(resize-zram/deckswap): Prevent multiple sizes from being defined

Replaces whatever value is there with the new value

* fix(deckswap): Enable/disable instantaneously

No need to reboot

* feat(resize-zram/deckswap): Resize instantaneously without reboots

Author: EyeCantCU

system_files/deck/shared/usr/share/ublue-os/just/60-custom.just

@@ -276,8 +276,8 @@ deckswap-on:
   #!/usr/bin/env bash
   STATUS=$(systemctl status deckswap.service)
   if grep -q 'inactive' <<< ${STATUS}; then
-    systemctl enable deckswap.service
-    echo 'deckswap enabled. Please reboot.'
+    systemctl enable --now deckswap.service
+    echo 'deckswap enabled.'
   else
     echo 'deckswap is already enabled.'
   fi
@@ -287,8 +287,8 @@ deckswap-off:
   #!/usr/bin/env bash
   STATUS=$(systemctl status deckswap.service)
   if grep -qv 'inactive' <<< ${STATUS}; then
-    systemctl disable deckswap.service
-    echo 'deckswap disabled. Please reboot.'
+    systemctl disable --now deckswap.service
+    echo 'deckswap disabled.'
   else
     echo 'deckswap is already disabled.'
   fi
@@ -305,12 +305,13 @@ resize-deckswap:
       NEW_SIZE=1
     fi
     if ((${NEW_SIZE} >= 1 && ${NEW_SIZE} <= 16)); then
-      sudo sed -i 's/SWAP_SIZE='${CURRENT_SIZE}'G/SWAP_SIZE='${NEW_SIZE}'G/g' ${CONFIG}
-      echo 'Current size: '${NEW_SIZE}'G. Please reboot.'
+      sudo sed -i 's/SWAP_SIZE=.*/SWAP_SIZE='${NEW_SIZE}'G/g' ${CONFIG}
+      echo 'Current size: '${NEW_SIZE}'G.'
     else
       echo 'Error: Input out of range (1-16). Running again.'
       ujust resize-deckswap
     fi
+    systemctl restart deckswap.service
   else
     echo 'Error: Input is not an integer. Running again.'
     ujust resize-deckswap
@@ -361,11 +362,13 @@ resize-zram:
     fi
     if ((${NEW_SIZE} >= 512 && ${NEW_SIZE} <= 4096)); then
       if grep -q "zram-size" <<< $(cat ${CONFIG}); then
-        sudo sed -i 's/zram-size='${CURRENT_SIZE}'/zram-size='${NEW_SIZE}'/g' ${CONFIG}
+        sudo sed -i 's/zram-size=.*/zram-size='${NEW_SIZE}'/g' ${CONFIG}
       else
         sudo echo "zram-size=${NEW_SIZE}" >> ${CONFIG}
       fi
-      echo 'Current size: '${NEW_SIZE}'. Please reboot.'
+      systemctl daemon-reload
+      systemctl start /dev/zram0
+      zramctl
     else
       echo 'Error: Input out of range (512-4096). Running again.'
       ujust resize-zram