feat: Core authentication plugins (#1180)

- Add authentication plugins framework
- Add core plugins (Pre-shared key, Parent, and anonymous
authentication)
- Fixes #1058 
- Refactored app initialization so embed-grid and embed-chart share the
same logic
  - Allows embed-grid/embed-chart to display a login screen if necessary
  - embed-grid/embed-chart now also authorize

__mocks__/dh-core.js

@@ -1259,6 +1259,8 @@ class CoreClient {
   }
 }
 
+CoreClient.LOGIN_TYPE_ANONYMOUS = 'MOCK_LOGIN_ANONYNOUS';
+
 class FileContents {
   static text(...text) {
     return new FileContents(text.join(''));

jest.config.base.cjs

@@ -18,6 +18,7 @@ module.exports = {
       __dirname,
       './__mocks__/fileMock.js'
     ),
+    '^fira$': 'identity-obj-proxy',
     '^monaco-editor$': path.join(
       __dirname,
       'node_modules',

jest.setup.ts

@@ -29,3 +29,9 @@ Object.defineProperty(window, 'matchMedia', {
     dispatchEvent: jest.fn(),
   })),
 });
+
+Object.defineProperty(document, 'fonts', {
+  value: {
+    ready: Promise.resolve(),
+  },
+});