[accounting]: rename accountingservice to accounting

[puckpuck]

Changes

Renames accountingservice to accounting.

This is the first service to get renamed based on the overall rename effort for all components in the demo.

I did a "Find All" for accountingservice and accounting_service without case sensitivity and manually updated each entry. I did a full docker prune, then ran docker compose build accounting followed by make start. Tested in Jaeger and Grafana that all telemetry data is working as intended.

Merge Requirements

For new features contributions, please make sure you have completed the following
essential items:

• CHANGELOG.md updated to document new feature additions
• Appropriate documentation updates in the docs
• Appropriate Helm chart updates in the helm-charts

Maintainers will not merge until the above have been completed. If you're unsure
which docs need to be changed ping the
@open-telemetry/demo-approvers.

[julianocosta89]

Awesome!

[rogercoll]

LGTM, just a minor question

[puckpuck]

Ahh... technically we should of left the genproto stuff off. It was left over from when the accountingservice originally started as a go based service before being moved to .NET.

I'll write another PR to remove it.