refactor: customize exceptions and logs

[mrverdant13]

Description

• Use custom specific exceptions
• Log coverage values with semantic colors

[codecov[bot]]

Codecov Report

Merging #36 (3ea24f2) into main (b047cc8) will increase coverage by 1.80%. The diff coverage is 100.00%.

@@             Coverage Diff             @@
##             main       #36      +/-   ##
===========================================
+ Coverage   98.19%   100.00%   +1.80%     
===========================================
  Files          12        15       +3     
  Lines         443       454      +11     
===========================================
+ Hits          435       454      +19     
+ Misses          8         0       -8     

Impacted Files	Coverage Δ
lib/src/commands/check/check.dart	100.00% <100.00%> (+3.57%)	:arrow_up:
lib/src/commands/check/min_coverage.exception.dart	100.00% <100.00%> (ø)
lib/src/commands/filter/filter.dart	100.00% <100.00%> (+3.84%)	:arrow_up:
lib/src/commands/report/report.dart	100.00% <100.00%> (+3.63%)	:arrow_up:
lib/src/commands/rm/rm.dart	100.00% <100.00%> (+4.00%)	:arrow_up:
lib/src/commands/value/value.dart	100.00% <100.00%> (+6.45%)	:arrow_up:
lib/src/entities/cov_base.dart	100.00% <100.00%> (ø)
lib/src/entities/cov_file.dart	100.00% <100.00%> (ø)
lib/src/entities/coverde.exception.dart	100.00% <100.00%> (ø)
lib/src/entities/covfile_format.exception.dart	100.00% <100.00%> (ø)
... and 5 more

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