feat: impl PeekingNext for vec::IntoIter

[aatifsyed]

No description provided.

[codecov]

Codecov Report

❌ Patch coverage is 0% with 6 lines in your changes missing coverage. Please review.
✅ Project coverage is 94.00%. Comparing base (6814180) to head (ba24dfa).
⚠️ Report is 156 commits behind head on master.

Files with missing lines	Patch %	Lines
src/peeking_take_while.rs	0.00%	6 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #1059      +/-   ##
==========================================
- Coverage   94.38%   94.00%   -0.38%     
==========================================
  Files          48       50       +2     
  Lines        6665     6260     -405     
==========================================
- Hits         6291     5885     -406     
- Misses        374      375       +1     

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