Check for having to call `get_basis` on a basis

[mateuszbaran]

This is the thing I wrote about here: https://github.com/JuliaManifolds/Manopt.jl/pull/167#issue-1453906466 .

[codecov[bot]]

Codecov Report

Merging #139 (2104be4) into master (c487559) will decrease coverage by 0.12%. The diff coverage is 100.00%.

:exclamation: Current head 2104be4 differs from pull request most recent head 941a92f. Consider uploading reports for the commit 941a92f to get more accurate results

@@            Coverage Diff             @@
##           master     #139      +/-   ##
==========================================
- Coverage   99.79%   99.66%   -0.13%     
==========================================
  Files          18       18              
  Lines        2390     2392       +2     
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- Hits         2385     2384       -1     
- Misses          5        8       +3     

Impacted Files	Coverage Δ
src/bases.jl	100.00% <100.00%> (ø)
src/ManifoldsBase.jl	98.58% <0.00%> (-0.95%)	:arrow_down:
src/decorator_trait.jl	99.31% <0.00%> (-0.69%)	:arrow_down:
src/numbers.jl	100.00% <0.00%> (ø)
src/PowerManifold.jl	99.59% <0.00%> (ø)

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[kellertuer]

Will that already be used here in Base somewhere or is it just useful over on the LM-Alg?

[mateuszbaran]

This can be useful for any algorithm that needs to call get_vector or get_coordinates on arbitrary bases. We just didn't really care before because usually DefaultOrthonormalBasis works fine.

[kellertuer]

Cool. I was just wondering whether it might even be useful somewhere in here already?

[mateuszbaran]

Maybe it could already be useful for something, I haven't given it much thought.