Fix lint errors

types/iobroker/iobroker-tests.ts

@@ -0,0 +1,5 @@
+// Help! what to test here?
+
+declare const adapter: ioBroker.Adapter;
+
+adapter.setState("not.a.state", true);

types/iobroker/tsconfig.json

@@ -7,6 +7,7 @@
         "noImplicitAny": true,
         "noImplicitThis": true,
         "strictNullChecks": true,
+        "strictFunctionTypes": true,
         "baseUrl": "../",
         "typeRoots": [
             "../"

types/iobroker/tslint.json

@@ -1 +1,8 @@
-{ "extends": "dtslint/dt.json" }
+{
+    "extends": "dtslint/dtslint.json",
+    "rules": {
+        // This package has its own type `Object` which is not equal to the global `Object` type
+        // To avoid any confusion, it is referenced as `ioBroker.Object` instead of just `Object`
+        "no-unnecessary-qualifier": false
+    }
+}