replacing the interface of irlbaSVD with CppIrlba `request`

[Shuangbin Xu]

Thanks for developing the infrastructure (BiocSingular and CppIrlba). They are significant in omics or other data analysis. However,
the runIrlbaSVD uses the irlba, which is slow for big data. Since CppIrlba has implemented the same work with Eigen, whether it will be applied to BiocSinglular.

[Aaron Lun]

Indeed, we did have plans for that, but the relevant proposal didn't get funded. 😞

So now there's no one to work on it. (Unfortunately, I don't have the time to improve this package; I just try to fix any bugs and keep things running as best as I can.) Back to the grant proposal drawing board, I guess.