Move data provider to shared package (#582)

* create data-provider package and move code from data-provider folder to be shared between apps

* fix type issues

* add packages to ignore

* add new data-provider package to apps

* refactor: change client imports to use @librechat/data-provider package

* include data-provider build script in frontend build

* fix type issue after rebasing

* delete admin/package.json from this branch

* update test ci script to include building of data-provider package

* Try using regular build for test action

* Switch frontend-review back to build:ci

* Remove loginRedirect from Login.tsx

* Add ChatGPT back to EModelEndpoint

packages/data-provider/jest.config.js

@@ -0,0 +1,18 @@
+module.exports = {
+  collectCoverageFrom: ['src/**/*.{js,jsx,ts,tsx}', '!<rootDir>/node_modules/'],
+  coveragePathIgnorePatterns: ['/node_modules/', '/dist/'],
+  coverageReporters: ['text', 'cobertura'],
+  testResultsProcessor: 'jest-junit',
+  moduleNameMapper: {
+    '^@src/(.*)$': '<rootDir>/src/$1',
+  },
+  // coverageThreshold: {
+  //   global: {
+  //     statements: 58,
+  //     branches: 49,
+  //     functions: 50,
+  //     lines: 57,
+  //   },
+  // },
+  restoreMocks: true
+};