Started readding old core frontend code

frontend/react/src/unit/databases/aircraftdatabase.ts

@@ -0,0 +1,37 @@
+import { getApp } from "../../olympusapp";
+import { GAME_MASTER } from "../../constants/constants";
+import { UnitDatabase } from "./unitdatabase"
+
+export class AircraftDatabase extends UnitDatabase {
+    constructor() {
+        super('api/databases/units/aircraftdatabase');
+    }
+
+	getCategory() {
+		return "Aircraft";
+    }
+
+    getSpawnPointsByName(name: string) {
+        if (getApp().getMissionManager().getCommandModeOptions().commandMode == GAME_MASTER || !getApp().getMissionManager().getCommandModeOptions().restrictSpawns) 
+            return 0;
+
+        const blueprint = this.getByName(name);
+        if (blueprint?.cost != undefined)
+            return blueprint?.cost; 
+            
+        if (blueprint?.era == "WW2")
+            return 20;
+        else if (blueprint?.era == "Early Cold War")
+            return 50;
+        else if (blueprint?.era == "Mid Cold War")
+            return 100;
+        else if (blueprint?.era == "Late Cold War")
+            return 200;
+        else if (blueprint?.era == "Modern")
+            return 400;
+        return 0;
+    }
+}
+
+export var aircraftDatabase = new AircraftDatabase();
+