Added single end read handling to xenome

[syansanofi]

Propose to add single end xenome functionality. Working version. Please free to add/change en mass.

[kamyshova]

@syansanofi Hi, Shu. Ok, we'll review and make any modifications if needed.

[codecov-io]

Codecov Report

Merging #134 into develop will decrease coverage by 0.01%.
The diff coverage is 96.15%.

@@              Coverage Diff              @@
##             develop     #134      +/-   ##
=============================================
- Coverage      95.16%   95.15%   -0.02%     
- Complexity       611      621      +10     
=============================================
  Files            115      115              
  Lines           3186     3199      +13     
  Branches         156      167      +11     
=============================================
+ Hits            3032     3044      +12     
  Misses            83       83              
- Partials          71       72       +1     

Impacted Files	Coverage Δ	Complexity Δ
...rc/main/java/com/epam/fonda/tools/impl/Xenome.java	98.36% <96.15%> (-1.64%)	14.00 <0.00> (+10.00)	⬇️

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[kamyshova]

@syansanofi Shu, I've added some changes to the branch. Could you check them, please? After your approval, I'll merge this to the develop branch.

[syansanofi]

Looks correct. (Sorry but I don't see option to merge) I will reopen this. Thanks!