feat(BE): add excluded stockables support in FIFO allocation and fetching methods

internal/utils/fifo/registry.go

@@ -54,11 +54,12 @@ type StockableConfig struct {
 
 // UsableConfig registers a table that consumes stock (recordings, adjustments, sales, etc).
 type UsableConfig struct {
-	Key     UsableKey
-	Table   string
-	Columns UsableColumns
-	OrderBy []string
-	Scope   QueryScope
+	Key                UsableKey
+	Table              string
+	Columns            UsableColumns
+	OrderBy            []string
+	Scope              QueryScope
+	ExcludedStockables []StockableKey // Stockables to exclude when consuming stock
 }
 
 var (