fix(build): update build and test tooling configuration, migrate project config to .smartconfig.json, and align TypeScript typings

ts/classes.easystore.ts

@@ -15,19 +15,19 @@ export class EasyStore<T> {
     @Collection(() => this.smartdataDbRef)
     class SmartdataEasyStore extends SmartDataDbDoc<SmartdataEasyStore, SmartdataEasyStore> {
       @unI()
-      public nameId: string;
+      public nameId!: string;
 
       @svDb()
-      public ephemeral: {
+      public ephemeral!: {
         activated: boolean;
         timeout: number;
       };
 
       @svDb()
-      lastEdit: number;
+      lastEdit!: number;
 
       @svDb()
-      public data: Partial<T>;
+      public data!: Partial<T>;
     }
     return SmartdataEasyStore;
   })();
@@ -37,7 +37,7 @@ export class EasyStore<T> {
     this.nameId = nameIdArg;
   }
 
-  private easyStorePromise: Promise<InstanceType<typeof this.easyStoreClass>>;
+  private easyStorePromise!: Promise<InstanceType<typeof this.easyStoreClass>>;
   private async getEasyStore(): Promise<InstanceType<typeof this.easyStoreClass>> {
     if (this.easyStorePromise) {
       return this.easyStorePromise;