Merge Rcond_ and OperatorNorm_ into Lapack trait

[termoshtt]

For #168, Same as #340, #341, #343, #345, and #346

[codecov]

Codecov Report

Merging #347 (1abe240) into master (acd7858) will increase coverage by 0.05%.
The diff coverage is 100.00%.

@@            Coverage Diff             @@
##           master     #347      +/-   ##
==========================================
+ Coverage   89.98%   90.03%   +0.05%     
==========================================
  Files          74       74              
  Lines        4555     4578      +23     
==========================================
+ Hits         4099     4122      +23     
  Misses        456      456              

Impacted Files	Coverage Δ
lax/src/lib.rs	95.16% <100.00%> (+0.51%)	⬆️
lax/src/opnorm.rs	100.00% <100.00%> (ø)
lax/src/rcond.rs	100.00% <100.00%> (ø)

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