- feat: remove unnecessary migrations, controllers and models files.

- feat: metable store
- feat: metable store with settings store.
- feat: settings middleware to auto-save and load.
- feat: DI db manager to master container.
- feat: write some logs to sale invoices.

server/tests/lib/MetableStore.test.ts

@@ -0,0 +1,39 @@
+import { expect } from '~/testInit';
+import MetableStore from '@/lib/MetableStore';
+
+describe('MetableStore()', () => { 
+
+  describe('find', () => {
+    it('Find metadata by the given key.', () => {
+      const store = new MetableStore();
+      store.metadata = [{ key: 'first-key', value: 'first-value' }];
+
+      const meta = store.find('first-key');
+
+      expect(meta.value).equals('first-value');
+      expect(meta.key).equals('first-key');
+    });
+
+    it('Find metadata by the key as payload.', () => {
+      
+    });
+
+    it('Find metadata by the given key and extra columns.', () => {
+
+    });
+  });
+
+  describe('all()', () => {
+    it('Should retrieve all metadata in the store.', () => {
+
+    });
+  });
+
+  describe('get()', () => {
+    it('Should retrieve data of the given metadata query.', () => {
+
+    });
+  });
+
+  describe('removeMeta')
+});