feat(material): modify handlers and service of material

app/models/equipment-material.ts

@@ -1,6 +0,0 @@
-export interface EquipmentMaterial {
-  code: string;
-  name: string;
-  uom_code: string;
-  stock: number;
-}

app/models/material.ts

@@ -0,0 +1,6 @@
+export interface Material {
+  code: string
+  name: string
+  uom_code: string
+  stock: number
+}

app/models/uom.ts

@@ -0,0 +1,4 @@
+export interface Uom {
+  code: string
+  name: string
+}