feat: 148

[ben1009]

with mergesort, go can pass, but rust timeout ?

[codecov]

Codecov Report

Attention: Patch coverage is 95.89041% with 3 lines in your changes missing coverage. Please review.

Project coverage is 82.4%. Comparing base (afb2b7c) to head (fd3f873).
Report is 11 commits behind head on master.

Files with missing lines	Patch %	Lines
src/problem/p0148_sort_list.rs	95.8%	3 Missing ⚠️

Additional details and impacted files

Files with missing lines	Coverage Δ
src/problem/p0148_sort_list.rs	95.8% <95.8%> (ø)