refactor: use recyclers instead of stackers

lib/new-admin/graphql/types/machine.type.js

@@ -16,7 +16,7 @@ const typeDef = gql`
     model: String
     cashUnits: CashUnits
     numberOfCassettes: Int
-    numberOfStackers: Int
+    numberOfRecyclers: Int
     statuses: [MachineStatus]
     latestEvent: MachineEvent
     downloadSpeed: String
@@ -30,12 +30,12 @@ const typeDef = gql`
     cassette2: Int
     cassette3: Int
     cassette4: Int
-    stacker1f: Int
-    stacker1r: Int
-    stacker2f: Int
-    stacker2r: Int
-    stacker3f: Int
-    stacker3r: Int
+    recycler1: Int
+    recycler2: Int
+    recycler3: Int
+    recycler4: Int
+    recycler5: Int
+    recycler6: Int
   }
 
   input CashUnitsInput {
@@ -44,12 +44,12 @@ const typeDef = gql`
     cassette2: Int
     cassette3: Int
     cassette4: Int
-    stacker1f: Int
-    stacker1r: Int
-    stacker2f: Int
-    stacker2r: Int
-    stacker3f: Int
-    stacker3r: Int
+    recycler1: Int
+    recycler2: Int
+    recycler3: Int
+    recycler4: Int
+    recycler5: Int
+    recycler6: Int
   }
 
   type UnpairedMachine {