Add support for configuration file

[alexpdev]

• Added support for loading create options from configuration file.
• deprecated interactive mode
• improved unit tests
• improved documentation

[codecov]

Codecov Report

Merging #168 (87c2470) into master (3c68f42) will not change coverage.
The diff coverage is 100.00%.

@@            Coverage Diff            @@
##            master      #168   +/-   ##
=========================================
  Coverage   100.00%   100.00%           
=========================================
  Files           22        22           
  Lines         2820      2903   +83     
=========================================
+ Hits          2820      2903   +83     

Impacted Files	Coverage Δ
torrentfile/recheck.py	100.00% <ø> (ø)
tests/test_cli.py	100.00% <100.00%> (ø)
tests/test_commands.py	100.00% <100.00%> (ø)
tests/test_interactive.py	100.00% <100.00%> (ø)
torrentfile/cli.py	100.00% <100.00%> (ø)
torrentfile/commands.py	100.00% <100.00%> (ø)
torrentfile/rebuild.py	100.00% <100.00%> (ø)
torrentfile/version.py	100.00% <100.00%> (ø)

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