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

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

kubejs/startup_scripts/main_startup_script.js

@@ -84,6 +84,10 @@ GTCEuStartupEvents.craftingComponents(event => {
 	registerTFGCraftingComponents(event)
 })
 
+StartupEvents.modifyCreativeTab(global.TAB_IDS.CREATE_BASE, event => {
+    modifyCreateCreativeTab(event)
+})
+
 Platform.mods.primitive_creatures.name = "Primitive Creatures";
 Platform.mods.tfg.name = "TerraFirmaGreg";
 Platform.mods.kubejs.name = "TerraFirmaGreg";