Add level, time, and name to default format

[nsheff]

logmuse's default log format was a bare %(message)s, so a log line showed no level, no timestamp, and no indication of where it came from. Almost every package downstream fixed that itself by calling coloredlogs.install() with its own format string, and they all wrote roughly the same thing.

There are about thirteen of those calls across pepdbagent, geopephub, pephubclient, bedboss, and pephub. Reaching for coloredlogs.install() to set a format is also how those packages ended up configuring logging at import time, which is a separate problem we are currently cleaning up.

This changes the default to include the level, the time, and the logger name:

[INFO] [13:31:14] [geopephub.metageo_pephub] GSE: 'GSE12345' was added to the queue

The logger name deserves a note. Several packages were hardcoding a per-package tag like [BEDBOSS] or [PEPDBAGENT] into their format strings, which is just the logger name written out by hand. %(name)s gives the same thing automatically, and gives the real originating logger rather than a fixed label, so submodules identify themselves. Downstream packages can drop those tags entirely.

Developer mode and log file output are unchanged, and passing an explicit fmt still overrides the default.

This does make output wider, and it changes what every logmuse user sees. Worth a look before it goes out.