chore: tool to create common dashboards

[MichelHollands]

What this PR does / why we need it:

This script copies the dashboards in production/loki-mixin-compiled to production/all-modes-loki-mixin-compiled. The dashboards are then altered so they support single binary, SSD and micro services modes.

For example job=~\"$namespace/ingester.*\" will be changed to job=~\"$namespace/(ingester.*|(loki|enterprise-logs)-write|loki-single-binary)\" so it works on all 3 deployment types.

Checklist

• Reviewed the CONTRIBUTING.md guide (required)
• Documentation added
• Tests updated
• Title matches the required conventional commits format, see here
• Changes that require user attention or interaction to upgrade are documented in docs/sources/setup/upgrade/_index.md
• For Helm chart changes bump the Helm chart version in production/helm/loki/Chart.yaml and update production/helm/loki/CHANGELOG.md and production/helm/loki/README.md. Example PR
• If the change is deprecating or removing a configuration option, update the deprecated-config.yaml and deleted-config.yaml files respectively in the tools/deprecated-config-checker directory. Example PR

[MichelHollands]

Closing in favour of #12700