fix(infinitest.args): Support space in quotes + support SplitOn config

[sarod]

Fixes #261

[codecov]

Codecov Report

Merging #262 into master will increase coverage by 0.07%.
The diff coverage is 100%.

@@             Coverage Diff              @@
##             master     #262      +/-   ##
============================================
+ Coverage     73.09%   73.17%   +0.07%     
- Complexity     1217     1224       +7     
============================================
  Files           181      181              
  Lines          4033     4045      +12     
  Branches        300      299       -1     
============================================
+ Hits           2948     2960      +12     
  Misses          990      990              
  Partials         95       95

Impacted Files	Coverage Δ	Complexity Δ
...itest/environment/FileCustomJvmArgumentReader.java	92.85% <100%> (+5.35%)	13 <10> (+7)	⬆️

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