[PicaMetrics] Build with CI, manage conf and secrets with Git

pica-metrics-bot/CHANGELOG.md

pica-metrics-bot/Dockerfile

pica-metrics-bot/README.md

pica-metrics-bot/clair-whitelist.yml

pica-metrics-bot/config.json

pica-metrics-bot/docker-compose.yml

pica-metrics-bot/entrypoint.sh

pica-metrics-bot/picasoft-metrics-bot

pica-metrics-bot/secrets/account.secrets.example

pica-metrics-bot/secrets/influxdb.secrets.example