chore: centralize jest config for angular, module mapping (#1030)

see title.

Signed-off-by: Todd Baert <[email protected]>

Author: toddbaert

jest.config.ts

@@ -189,7 +189,26 @@ export default {
         ],
       },
     },
-    '<rootDir>/packages/angular',
+    {
+      displayName: 'angular',
+      testEnvironment: 'jsdom',
+      preset: 'jest-preset-angular',
+      testMatch: ['<rootDir>/packages/angular/projects/angular-sdk/src/**/*.spec.{ts,tsx}'],
+      setupFilesAfterEnv: ['<rootDir>/packages/angular/setup-jest.ts'],
+      moduleNameMapper: {
+        '@openfeature/core': '<rootDir>/packages/shared/src',
+        '@openfeature/web-sdk': '<rootDir>/packages/web/src',
+      },
+      transform: {
+        '^.+\\.(ts|js|html|svg)$': [
+          'jest-preset-angular',
+          {
+            tsconfig: '<rootDir>/packages/angular/tsconfig.json',
+            isolatedModules: true,
+          },
+        ],
+      },
+    }
   ],
 
   // Use this configuration option to add custom reporters to Jest