feat: chain form group

src/app/pages/settings/chains/chain-formgroup.ts

@@ -0,0 +1,12 @@
+import { FormControl, FormGroup, Validators } from '@angular/forms';
+
+export class ChainFormGroup extends FormGroup<{name: FormControl<string|null>, image: FormControl<File|null>}> {
+  constructor(
+    form = {
+      name: new FormControl('', Validators.required),
+      image: new FormControl<File | null>(null),
+    },
+  ) {
+    super(form);
+  }
+}