Added Job methods and reorganized init

[alongd]

Added:

• deduce_software
• set_cpu_and_mem
• set_file_paths

[codecov]

Codecov Report

Merging #142 into master will increase coverage by 0.3%.
The diff coverage is 37.36%.

@@            Coverage Diff            @@
##           master     #142     +/-   ##
=========================================
+ Coverage   42.63%   42.93%   +0.3%     
=========================================
  Files          27       27             
  Lines        6106     6118     +12     
  Branches     1579     1583      +4     
=========================================
+ Hits         2603     2627     +24     
+ Misses       3120     3108     -12     
  Partials      383      383

Impacted Files	Coverage Δ
arc/job/job.py	21.24% <37.36%> (+2.7%)	⬆️
arc/reaction.py	41.92% <0%> (ø)	⬆️

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