Add tests for the LiveReloadMessager

[HavokInspiration]

No description provided.

[codecov-io]

Codecov Report

Merging #2 into master will increase coverage by 45.18%.
The diff coverage is 57.14%.

@@              Coverage Diff              @@
##             master       #2       +/-   ##
=============================================
+ Coverage     40.29%   85.48%   +45.18%     
- Complexity       19       20        +1     
=============================================
  Files             3        3               
  Lines            67       62        -5     
=============================================
+ Hits             27       53       +26     
+ Misses           40        9       -31

Impacted Files	Coverage Δ	Complexity Δ
src/LiveReloadMessager.php	89.65% <57.14%> (+89.65%)	9 <1> (+1)	⬆️

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