feat: implement status automation and router pattern

- Implemented modular status automation system (statusHandlers.ts).
- Added handlers for 'Published' (Active/Qty 1), 'Sold' (Active/Qty 0), and 'Drafted'.
- Refactored onEdit triggers into a central Router pattern in OnEditHandler.ts.
- Updated Product.ts to support explicit quantity setting (fixed 0 value bug).
- Updated shopifyApi.ts to implement SetInventoryItemQuantity (using ignoreCompareQuantity).
- Consolidated triggers into single onEditHandler.
- Updated project documentation.

src/triggers.ts

@@ -5,14 +5,7 @@ export function reinstallTriggers() {
   }
 
   let ss = SpreadsheetApp.getActive()
-  ScriptApp.newTrigger("newSkuHandler").forSpreadsheet(ss).onEdit().create()
-  ScriptApp.newTrigger("matchProductToShopifyOnEditHandler")
-    .forSpreadsheet(ss)
-    .onEdit()
-    .create()
-  // ScriptApp.newTrigger("columnOnEditHandler").forSpreadsheet(ss).onEdit().create()
-  // ScriptApp.newTrigger("onEditQueue").forSpreadsheet(ss).onEdit().create()
-  ScriptApp.newTrigger("onEditQueue").forSpreadsheet(ss).onEdit().create()
+  ScriptApp.newTrigger("onEditHandler").forSpreadsheet(ss).onEdit().create()
   ScriptApp.newTrigger("processBatchedEdits")
     .timeBased()
     .everyMinutes(1)