fix(debug): set default log level

[cristiand391]

What does this PR do?

makes --dev-debug to set SF_LOG_LEVEL=trace if it's not set.

before:

to get debug logs from oclif and logging output we need to set --dev-debug and SF_LOG_LEVEL env var

after:

only --dev-debug is required. The default log level is trace so that all logger output is included.

EDIT
this is already merged, but after this change you can't disable logging output when using --dev-debug.
Set DEBUG=* instead of --dev-debug if you only want to get debug output (looking for oclif-specific stuff)

What issues does this PR fix or reference?

@W-14375066@

[git2gus]

This issue has been linked to a new work item: W-14375066

[iowillhoit]

QA NOTES

• 🟢 Seeing trace logs with --dev-debug
• 🟢 You can override it if you want SF_LOG_LEVEL=info bin/run.js org list --dev-debug
  • No trace logs shown

Looks good!