Add logging for easier to debug

[hongquan]

Fixes #423

Checklist
[x]-I have read the Contribution & Best practices Guide and my PR follows them.
[x]-My branch is up-to-date with the Upstream master branch.
[x]-The unit tests pass locally with my changes
[x]-I have added tests that prove my fix is effective or that my feature works
[x]-I have added necessary documentation (if appropriate)
[x]-All the functions created/modified in this PR contain relevant docstrings.

Test Passing
[]- The SUSI Server must be building on the pi on bootup
[]- The hotword detection should have a decent accuracy
[]- SUSI Linux shouldn't crash when switching from online to offline and vice versa (failing as of now)
[]- SUSI Linux should be able to boot offline when no internet connection available (failing)

Short description of what this resolves:

Changes proposed in this pull request:

[hongquan]

Test-susi_1.log

[hongquan]

By default, the log is not produced. To let the log produced, add the option -v (verbose) to the command.

python3 -m main -v

You can add one more v to increase the verbosity level:

python3 -m main -vv