Implement log_level config option

.env.template

@@ -43,6 +43,12 @@
 ## It's recommended to also set 'ROCKET_CLI_COLORS=off'
 # LOG_FILE=/path/to/log
 
+## Log level
+## Change the verbosity of the log output
+## Valid values are "trace", "debug", "info", "warn", "error" and "off"
+## This requires extended logging
+# LOG_LEVEL=Info
+
 ## Enable WAL for the DB
 ## Set to false to avoid enabling WAL during startup.
 ## Note that if the DB already has WAL enabled, you will also need to disable WAL in the DB,