Add projected GD and torch CP + Tucker solutions

Manifest.toml

Project.toml

examples/reconstruct/README.md

examples/reconstruct/generate.jl

examples/reconstruct/inspiration/test_cp.py

examples/reconstruct/inspiration/test_tucker.py

examples/reconstruct/inspiration/thetanorm.jl

examples/reconstruct/test-projected-gd.jl

examples/reconstruct/test-thetanorm.jl

examples/reconstruct/test-torch-cp.py

examples/reconstruct/test-torch-tucker.py