Added support for {I} tag to draw image from file

[alosich]

Don't beat too hard, please.

[codecov]

Codecov Report

Merging #2013 into master will decrease coverage by 0.06%.
The diff coverage is n/a.

@@            Coverage Diff            @@
##           master   #2013      +/-   ##
=========================================
- Coverage    9.24%   9.18%   -0.07%     
=========================================
  Files         180     180              
  Lines       10891   10969      +78     
=========================================
  Hits         1007    1007              
- Misses       9884    9962      +78     

Flag	Coverage Δ
#unittests	9.18% <0.00%> (-0.07%)	⬇️

Impacted Files	Coverage Δ
src/utils/file.cpp	33.58% <0.00%> (-1.04%)	⬇️
src/modules/fs.cpp	0.00% <0.00%> (ø)	⬆️
include/utils/file.hpp	75.00% <0.00%> (ø)	⬆️
src/modules/battery.cpp	0.00% <0.00%> (ø)	⬆️
src/modules/network.cpp	0.00% <0.00%> (ø)	⬆️
src/modules/backlight.cpp	0.00% <0.00%> (ø)	⬆️
src/drawtypes/animation.cpp	0.00% <0.00%> (ø)	⬆️
src/modules/xworkspaces.cpp	0.00% <0.00%> (ø)	⬆️
include/components/logger.hpp	43.75% <0.00%> (ø)	⬆️
include/modules/backlight.hpp	0.00% <0.00%> (ø)	⬆️
... and 2 more

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