Support disabling file logging

[AdwaitSalankar]

Description

Added a checkbox which enables logging to a file

Related Issue

Fixes #1705

How Has This Been Tested?

When checkbox was disabled the logs did not appear in vorta.log

Screenshot

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)

Checklist:

• I have read the CONTRIBUTING guide.
• My code follows the code style of this project.
• My change requires a change to the documentation.
• I have updated the documentation accordingly.
• I have added tests to cover my changes.
• All new and existing tests passed.

I provide my contribution under the terms of the license of this repository and I affirm the Developer Certificate of Origin.

[AdwaitSalankar]

@m3nu Can you review this PR?

[real-yfprojects]

At this point config.LOG_DIR isn't initalized correctly yet. The following lines need to be executed first:

vorta/src/vorta/__main__.py

Lines 63 to 72 in 6a80518

	if want_development:
	# if we're using the default dev dir
	if want_development is DEFAULT_DIR_FLAG:
	config.init_dev_mode(config.default_dev_dir())
	else:
	# if we're not using the default dev dir and
	# instead we're using whatever dir is passed as an argument
	config.init_dev_mode(want_development)
	init_logger(background=want_background)