feat(agora): initial migration of packages and services (AG-1532)

[sagely1]

Description

Initial migration of Agora services

Changelog

Added packages for services:

• sanitize-html package
• rollbar

Updated package:

• @types/node

Added Agora services:

• ErrorService
• HelperService
• RollbarService
• SynapseApiService

Testing / Validation

Run all unit tests:
nx run-many -t test --parallel=5

Run agora service unit tests:
nx test agora-services

[tschaffter]

Run all unit tests:

@sagely1 Documented command should be passed via nx as much as possible to benefit from it (e.g. caching). Instead of suggesting to run jest, you could suggest nx test agora-services.

[sagely1]

Run all unit tests:

@sagely1 Documented command should be passed via nx as much as possible to benefit from it (e.g. caching). Instead of suggesting to run jest, you could suggest nx test agora-services.

Will do! I've updated the PR and README.md