feat: add clients view page

- add client view page
- add general tab 
- add status lookup pipe to store styles based on status
- add accounts filter pipe to filter accounts
- add status related colors in _color.scss

Fixes: #216

src/app/pipes/status-lookup.pipe.spec.ts

@@ -0,0 +1,8 @@
+import { StatusLookupPipe } from './status-lookup.pipe';
+
+describe('StatusLookupPipe', () => {
+  it('create an instance', () => {
+    const pipe = new StatusLookupPipe();
+    expect(pipe).toBeTruthy();
+  });
+});