Implements {empty} tag in Lister

[DarkSide666]

Implements {empty} tag in Lister.
fix #606

[codecov]

Codecov Report

Merging #611 into develop will increase coverage by 0.06%.
The diff coverage is 94.73%.

@@              Coverage Diff              @@
##             develop     #611      +/-   ##
=============================================
+ Coverage      66.52%   66.58%   +0.06%     
- Complexity      1828     1833       +5     
=============================================
  Files            100      100              
  Lines           4337     4345       +8     
=============================================
+ Hits            2885     2893       +8     
  Misses          1452     1452

Impacted Files	Coverage Δ	Complexity Δ
src/Template.php	70.5% <0%> (ø)	82 <0> (ø)	⬇️
src/Table.php	85.02% <100%> (ø)	111 <2> (ø)	⬇️
src/Lister.php	68.42% <100%> (+5.15%)	22 <0> (+5)	⬆️

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