Implement Admin Request Management

[josephshenq]

PR Title

Issue Number(s): #343 .

Critical Changes

• New field VerifiedByAdmin added to user schema. (Only existed for the new users after made the change, but i think old users missing this field should be fine)
• Change logic in the auth: when new user first time signed in, creates a user with verifiedByAdmin = false.
• Add endpoints to find all unverified users, approve/decline requests.
• Implement frontend components for request management page.
• Implement sending emails to admin when there's new user signed up.

Testing

Tested the new workflow of users sign in using new accounts, admin got the email, admin go to request management page to approve/decline.

Tested approve with different roles, deleting existing accounts, etc.

[github-actions]

Coverage report for web

Caution

Test run failed

St.❔	Category	Percentage	Covered / Total
🔴	Statements	19.12%	265/1386
🔴	Branches	11.43%	48/420
🔴	Functions	7.79%	31/398
🔴	Lines	12.54%	148/1180

Test suite run failed

Failed tests: 0/23. Failed suites: 8/11.

  ● Test suite failed to run

    Your test suite must contain at least one test.

      at onResult (node_modules/@jest/core/build/TestScheduler.js:133:18)
      at node_modules/@jest/core/build/TestScheduler.js:254:19
      at node_modules/emittery/index.js:363:13
          at Array.map (<anonymous>)
      at Emittery.emit (node_modules/emittery/index.js:361:23)

---

  ● Test suite failed to run

    Your test suite must contain at least one test.

      at onResult (node_modules/@jest/core/build/TestScheduler.js:133:18)
      at node_modules/@jest/core/build/TestScheduler.js:254:19
      at node_modules/emittery/index.js:363:13
          at Array.map (<anonymous>)
      at Emittery.emit (node_modules/emittery/index.js:361:23)

---

  ● Test suite failed to run

    Your test suite must contain at least one test.

      at onResult (node_modules/@jest/core/build/TestScheduler.js:133:18)
      at node_modules/@jest/core/build/TestScheduler.js:254:19
      at node_modules/emittery/index.js:363:13
          at Array.map (<anonymous>)
      at Emittery.emit (node_modules/emittery/index.js:361:23)

---

  ● Test suite failed to run

    Your test suite must contain at least one test.

      at onResult (node_modules/@jest/core/build/TestScheduler.js:133:18)
      at node_modules/@jest/core/build/TestScheduler.js:254:19
      at node_modules/emittery/index.js:363:13
          at Array.map (<anonymous>)
      at Emittery.emit (node_modules/emittery/index.js:361:23)

---

  ● Test suite failed to run

    Your test suite must contain at least one test.

      at onResult (node_modules/@jest/core/build/TestScheduler.js:133:18)
      at node_modules/@jest/core/build/TestScheduler.js:254:19
      at node_modules/emittery/index.js:363:13
          at Array.map (<anonymous>)
      at Emittery.emit (node_modules/emittery/index.js:361:23)

---

  ● Test suite failed to run

    Your test suite must contain at least one test.

      at onResult (node_modules/@jest/core/build/TestScheduler.js:133:18)
      at node_modules/@jest/core/build/TestScheduler.js:254:19
      at node_modules/emittery/index.js:363:13
          at Array.map (<anonymous>)
      at Emittery.emit (node_modules/emittery/index.js:361:23)

---

  ● Test suite failed to run

    Your test suite must contain at least one test.

      at onResult (node_modules/@jest/core/build/TestScheduler.js:133:18)
      at node_modules/@jest/core/build/TestScheduler.js:254:19
      at node_modules/emittery/index.js:363:13
          at Array.map (<anonymous>)
      at Emittery.emit (node_modules/emittery/index.js:361:23)

---

  ● Test suite failed to run

    Returning a Promise from "describe" is not supported. Tests must be defined synchronously.

      17 |  * @group unit
      18 |  */
    > 19 | describe("[API] Account - Integration Test", async () => {
         | ^
      20 |   const context = await createContextInner();
      21 |   const caller = appRouter.createCaller(context);
      22 |

      at Object.describe (__tests__/pages/api/account/account.int.test.ts:19:1)

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