Adds bloc implementation

[AyushBherwani1998]

No description provided.

[codecov]

Codecov Report

Merging #7 (da1d6e2) into main (711dcc9) will decrease coverage by 6.05%.
The diff coverage is 83.33%.

@@            Coverage Diff             @@
##             main       #7      +/-   ##
==========================================
- Coverage   96.42%   90.38%   -6.05%     
==========================================
  Files           4        7       +3     
  Lines          28       52      +24     
==========================================
+ Hits           27       47      +20     
- Misses          1        5       +4     

Files Changed	Coverage Δ
...s/home/presentation/bloc/unsplash_image_event.dart	33.33% <33.33%> (ø)
...es/home/presentation/bloc/unsplash_image_bloc.dart	100.00% <100.00%> (ø)
...s/home/presentation/bloc/unsplash_image_state.dart	100.00% <100.00%> (ø)