feat: console logger

[pwmcintyre]

This proposal adds a ConsoleLogger and updates the StandardLogger to use the environment variable LOG_FORMAT=TEXT to activate it.

Rational

When running a system locally / interactively, it's nice to see the log-level colorized.

Example

[pwmcintyre]

alternative

just use shell replacers? 🤷

alias color='(
sed ''/\"level\":\"DEBUG\"/s//$(printf "\033[36m\"level\":\"DEBUG\"\033[0m")/'' \
| sed ''/\"level\":\"INFO\"/s//$(printf "\033[32m\"level\":\"INFO\"\033[0m")/'' \
| sed ''/\"level\":\"WARN\"/s//$(printf "\033[33m\"level\":\"WARN\"\033[0m")/'' \
| sed ''/\"level\":\"ERROR\"/s//$(printf "\033[31m\"level\":\"ERROR\"\033[0m")/''
)'