Implement addition with UniformScaling

[albertomercurio]

As title

[codecov]

Codecov Report

❌ Patch coverage is 93.50649% with 10 lines in your changes missing coverage. Please review.
✅ Project coverage is 86.84%. Comparing base (4297205) to head (288bd2c).
⚠️ Report is 1 commits behind head on main.

Files with missing lines	Patch %	Lines
src/matrix_csc/matrix_csc_kernels.jl	86.66%	4 Missing ⚠️
src/matrix_csr/matrix_csr_kernels.jl	86.66%	4 Missing ⚠️
src/matrix_coo/matrix_coo_kernels.jl	60.00%	2 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main      #44      +/-   ##
==========================================
+ Coverage   86.25%   86.84%   +0.58%     
==========================================
  Files          18       18              
  Lines        1761     1915     +154     
==========================================
+ Hits         1519     1663     +144     
- Misses        242      252      +10     

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[github-actions]

⚠️ Performance Alert ⚠️

Possible performance regression was detected for benchmark 'Benchmark Results'.
Benchmark result of this commit is worse than the previous benchmark result exceeding threshold 1.30.

Benchmark suite	Current: 288bd2c	Previous: 4297205	Ratio
Three-argument dot/Array/COO	2258070 ns	1071458.5 ns	2.11

This comment was automatically generated by workflow using github-action-benchmark.