Orthogonalize materialize for tribanded

[jishnub]

Instead of defining separate methods for each combination of L/U and UNIT, we may instead read the parameters from the type inside a common method.

[codecov]

Codecov Report

Patch coverage: 100.00% and project coverage change: +0.01% 🎉

Comparison is base (7f123af) 89.43% compared to head (63a8633) 89.44%.
Report is 2 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff             @@
##           master     #393      +/-   ##
==========================================
+ Coverage   89.43%   89.44%   +0.01%     
==========================================
  Files          25       25              
  Lines        3510     3516       +6     
==========================================
+ Hits         3139     3145       +6     
  Misses        371      371              

Files Changed	Coverage Δ
src/generic/matmul.jl	81.20% <100.00%> (+0.78%)	⬆️
src/lapack.jl	89.09% <100.00%> (ø)
src/tribanded.jl	97.36% <100.00%> (ø)

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.