feature: Add create casings, shadow and radiance (#2256)

* feature: Add create casings, shadow and radiance

Added recipes for create:
- shadow steel casing
- refined radiance casing

closes #2224

* fix: radiant casing recipe

- Fixed and changed radiant casing recipe
- Moved adding to create tab logic to a dedicated file for organization
- Added constants.js for tab names to prevent typos and improve maintainability

* Changed radiant casing recipe to glowstone plate

---------

Co-authored-by: Redeix <brayden.j.m.ford@gmail.com>

kubejs/startup_scripts/create/constants.js

@@ -68,8 +68,6 @@ global.CREATE_DISABLED_ITEMS = [
     'create:creative_fluid_tank',
     'create:unprocessed_obsidian_sheet',
     'create:creative_motor',
-    'create:refined_radiance_casing', 
-    'create:shadow_steel_casing', 
     'create:wooden_bracket', 
     'create:red_sand_paper',
     'create:empty_blaze_burner',

kubejs/startup_scripts/create/creative_tab.js

@@ -0,0 +1,7 @@
+// priority: 0
+"use strict";
+
+function modifyCreateCreativeTab(event) {
+    event.add('create:shadow_steel_casing')
+    event.add('create:refined_radiance_casing')
+}