Upgrade to Angular 11

[MadLamprey]

Summary:

This pull request addresses some outdated packages in our application.

Fixes #237

Changes Made:

• Upgrade to Angular 11 using `ng update`
  • See: https://update.angular.io/?l=3&v=10.2-11.0
  • All changes mentioned have been reviewed
  • Dependencies that have been updated, other than those mentioned in the list, include:
    • apollo-angular
    • @angular-devkit/build-angular

Proposed Commit Message:

Upgrade to Angular 11

Some of our packages are old and outdated. We should actively maintain 
and keep these packages up-to-date so it is easier to maintain in the 
future.

Let's upgrade to Angular 11 to keep our packages up-to-date.

[chunweii]

There is a build error, please check and fix it @MadLamprey. Thank you

[Arif-Khalid]

I have tested the changes and all current functionality is working as intended. LGTM!

[gycgabriel]

Version upgrades need to tested on multiple platforms similar to CATcher-org/CATcher#1242

[cheehongw]

System

OS: Windows 10 22H2
Browser: Chrome
Browser Version: Version 121.0.6167.185 (Official Build) (64-bit)
Local Angular Version: 11.2.14
Node Version: 14.21.2
npm version: 6.14.17

Actions Run

npm install: success
npm run ng:serve:web

Tested Features

Switching between repositories
Filtering by labels

No bugs found

[vigneshsankariyer1234567890]

macOS works too :)

System

OS: macOS 13.3.1 (Ventura)
Browser: Chrome arm64
Browser Version: Version 120.0.6099.199 (Official Build) (arm-64)
Local Angular Version: 11.2.14
Node Version: 14.21.2
npm version: 6.14.17

Actions Run

npm install: success
npm run ng:serve:web

Tested Features

Switching between repositories
Filtering by labels

No bugs found

[Arif-Khalid]

System

OS: Windows 11 23H2
Browser: Opera GX
Browser Version: LVL5 (core: 106.0.4998.76)
Local Angular Version: 11.2.14
Node Version: 16.10.0
npm version: 7.5.6

Actions Run

npm install: success
npm run ng:serve:web

Tested Features

Switching between repositories
Filtering by labels

No bugs found

[Arif-Khalid]

System

OS: Windows 11 23H2
Browser: Chrome
Browser Version: 121.0.6167.185 (Official Build) (64-bit)
Local Angular Version: 11.2.14
Node Version: 16.10.0
npm version: 7.5.6

Actions Run

npm install: success
npm run ng:serve:web

Tested Features

Switching between repositories
Filtering by labels

No bugs found

[cheehongw]

LGTM