Improved commit (Close #235, #236, #240)

[edgardmessias]

• Added warning message if empty (Close Preserve failed commit message #235,Show warning if commit message is empty #240)
• Added info of reason for commit failed (Close Show reason for commit failed #236)

[codecov]

Codecov Report

Merging #245 into master will increase coverage by 0.16%.
The diff coverage is 70%.

@@            Coverage Diff             @@
##           master     #245      +/-   ##
==========================================
+ Coverage   60.42%   60.58%   +0.16%     
==========================================
  Files          25       25              
  Lines        2446     2451       +5     
  Branches      435      437       +2     
==========================================
+ Hits         1478     1485       +7     
+ Misses        964      962       -2     
  Partials        4        4

Impacted Files	Coverage Δ
src/svn.ts	81.67% <100%> (+0.14%)	⬆️
src/messages.ts	58.33% <55.55%> (-11.67%)	⬇️
src/commands.ts	53.34% <77.77%> (+0.17%)	⬆️
src/decorators.ts	96.22% <0%> (+7.54%)	⬆️

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