extract TiledFactorization module

[maltezfaria]

• Extract the TiledFactorization module into a package
• Update the dependencies
• Move tests on cholesky and lu to TiledFactorization

[codecov]

Codecov Report

Merging #8 (0f57da6) into main (52ceae7) will increase coverage by 1.96%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##             main       #8      +/-   ##
==========================================
+ Coverage   58.94%   60.91%   +1.96%     
==========================================
  Files          12        8       -4     
  Lines         609      481     -128     
==========================================
- Hits          359      293      -66     
+ Misses        250      188      -62     

Impacted Files	Coverage Δ
src/DataFlowTasks.jl	100.00% <ø> (ø)

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[maltezfaria]

Partially addresses #5. The other issues mentioned there (careful benchmarking and reviving the lu solver) should be moved upstream to the TiledFactorization package.