Fixing defaults in various modules

[root00198]

In various source modules, the default values are not set using the info.json file. Insted they are either set by hard coding or not set at all. In this PR I tried to fix all those modules.

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[codecov]

Codecov Report

Merging #1441 into main will increase coverage by 0.05%.
The diff coverage is 100%.

@@            Coverage Diff            @@
##             main   #1441      +/-   ##
=========================================
+ Coverage   66.35%   66.4%   +0.05%     
=========================================
  Files         125     125              
  Lines        2574    2581       +7     
  Branches      406     410       +4     
=========================================
+ Hits         1708    1714       +6     
- Misses        866     867       +1

Impacted Files	Coverage Δ
src/modules/Colormap/Colormap.js	90% <100%> (-3.11%)	⬇️
src/modules/FlipImage/Module.js	90% <100%> (+0.52%)	⬆️
src/modules/Threshold/Threshold.js	83.72% <100%> (ø)	⬆️
src/modules/Overlay/Module.js	100% <100%> (ø)	⬆️
src/modules/Colorbar/Module.js	100% <100%> (ø)	⬆️
src/modules/AddQR/Module.js	90.9% <100%> (ø)	⬆️
src/modules/ReplaceColor/ReplaceColor.js	92.59% <100%> (+0.28%)	⬆️

[root00198]

@publiclab/is-reviewers

[harshkhandeparkar]

LGTM! 🚀