Replace Dot Hints With Number Hints (#52)

As title says, makes the holograms much more readable.

Textures By: bapy_
Original PR By: kstvr32

Supercedes: https://github.com/GTNewHorizons/StructureLib/pull/32

Examples:
<img width="2534" height="1351" alt="image"
src="https://github.com/user-attachments/assets/c24f60b2-d654-4b15-b917-4003141a2b69"
/>
<img width="2538" height="1350" alt="image"
src="https://github.com/user-attachments/assets/a5ca3f42-ca96-4675-8e80-c89fba359fbf"
/>

src/main/java/com/gtnewhorizon/structurelib/block/BlockHint.java

@@ -50,6 +50,10 @@ public class BlockHint extends Block {
 
     @Override
     public IIcon getIcon(int aSide, int aMeta) {
+        // For numbered hints, top and bottom are blank
+        if (aSide <= 1 && aMeta <= 11) {
+            return hint[13];
+        }
         return hint[aMeta];
     }
 

src/main/java/com/gtnewhorizon/structurelib/gui/GuiScreenConfigureChannels.java

@@ -298,11 +298,10 @@ public class GuiScreenConfigureChannels extends GuiContainer implements IGuiScre
                 }
                 break;
         }
-        if (key.textboxKeyTyped(aChar, aKey)) {
+        if (key.textboxKeyTyped(aChar, aKey) || value.textboxKeyTyped(aChar, aKey)) {
             updateButtons();
             return;
         }
-        if (value.textboxKeyTyped(aChar, aKey)) return;
         super.keyTyped(aChar, aKey);
     }
 
@@ -313,7 +312,8 @@ public class GuiScreenConfigureChannels extends GuiContainer implements IGuiScre
         boolean existing = !StringUtils.isEmpty(keyText) && ChannelDataAccessor.hasSubChannel(trigger, keyText);
         getButtonList().get(ADD_BTN).displayString = existing ? I18n.format(I18N_PREFIX + "set")
                 : I18n.format(I18N_PREFIX + "add");
-        getButtonList().get(ADD_BTN).enabled = !StringUtils.isBlank(value.getText())
+        getButtonList().get(ADD_BTN).enabled = !StringUtils.isBlank(key.getText())
+                && !StringUtils.isBlank(value.getText())
                 && Integer.parseInt(value.getText()) > 0;
         getButtonList().get(UNSET_BTN).enabled = existing && !StringUtils.isBlank(value.getText());