Feature: Support importing multiple dashboards from directory

[vrymar]

About

We have the need to import all dashboards available in a provided directory.

References

• feat: Add option to import all dashboards from a directory #25

[codecov]

Codecov Report

Attention: Patch coverage is 40.54054% with 22 lines in your changes missing coverage. Please review.

Please upload report for BASE (main@fbd5375). Learn more about missing BASE report.

Files with missing lines	Patch %	Lines
grafana_import/cli.py	40.54%	22 Missing ⚠️

Additional details and impacted files

@@           Coverage Diff           @@
##             main      #27   +/-   ##
=======================================
  Coverage        ?   68.91%           
=======================================
  Files           ?        5           
  Lines           ?      444           
  Branches        ?        0           
=======================================
  Hits            ?      306           
  Misses          ?      138           
  Partials        ?        0           

Flag	Coverage Δ
unittests	68.91% <40.54%> (?)

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[vrymar]

Rebased on upstream/main. Still tests fail

[amotl]

Hi again. I've just fixed the software tests. Because messages are correctly going to Python's logger now (thanks!), a few of the test cases needed to be adjusted to compare output of Python's logger instead of introspecting stdout, effectively using pytest's caplog fixture now, instead of capsys.