adds implementaion of Display for UInteger and Integer

[desaikd]

Description of changes:
This PR works on adding Display implementation for UInteger and ``Integer`.

Test:
Adds unit tests for Display of UInteger and Integer.

[codecov]

Codecov Report

Merging #439 (a18175d) into main (b244539) will increase coverage by 0.12%.
The diff coverage is 100.00%.

@@            Coverage Diff             @@
##             main     #439      +/-   ##
==========================================
+ Coverage   83.52%   83.64%   +0.12%     
==========================================
  Files          83       83              
  Lines       15951    15965      +14     
==========================================
+ Hits        13323    13354      +31     
+ Misses       2628     2611      -17     

Impacted Files	Coverage Δ
src/text/raw_text_writer.rs	88.16% <100.00%> (+0.66%)	⬆️
src/text/text_formatter.rs	40.32% <100.00%> (+0.16%)	⬆️
src/types/integer.rs	74.10% <100.00%> (+4.39%)	⬆️
src/reader.rs	82.09% <0.00%> (-0.31%)	⬇️

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