feat: upgrade to node LTS v16

[gibaros]

feat(mojaloop/#2767): upgrade nodeJS version for quoting-service - mojaloop/project#2767

• standardised CI scripts, however, the test-integration CI job needed minor tweaks to work with the quoting-service's implementation
• updated docker-compose files to work correctly
• added wait-4-docker npm script
• fixed lint issues
• updated .nvmrc to latest LTS version
• added standard CI scripts/config to package.json: release, snapshot, standard-version, etc
• updated gitignore to include test/results and IGNORE patterns
• updated README with standard auto-release information
• Fixed imports
• Cleaned up Package.json
• Removed unnecessary dependencies
• Removed unnecessary files

Notes:

• Helm chart mountPaths need to be updated from /opt/quoting-service to /opt/app as follows:

    volumeMounts:
    - mountPath: /opt/app/config
      name: <deployment-name>

BREAKING CHANGE: Major version bump for node v16 LTS support, re-structuring of project directories to align to core Mojaloop repositories and docker image now uses /opt/app instead of /opt/quoting-service which will impact config mounts.

[mdebarros]

Hey @gibaros, a couple of comments for your attention.

Happy to jump on a call to discuss them with you in more detail.

Also, take note:

• we need to also align the ncurc file,
• that all the checks need to pass, and
• we need to add a proper description to this PR --> please refer to the following as an example: feat(mojaloop/#2092): upgrade nodeJS version for core services central-ledger#902

[mdebarros]

It looks good @gibaros, just minor comments to address.