Added interpolate_L2_field

[miguelmaso]

The function interpolate_L2_field allows to easily export the first Piola-Kirchhoff stress (or any L2 field) to VTK.
The function is compatible with:

• scalars
• vectors
• tensors

By defaut, the type will be inferred from the cell field/lazy operation

[github-actions]

Benchmark Results (Julia v1)

Time benchmarks

	main	2747719...	main / 2747719...
Constitutive models/Visco-elastic Ψ	29.2 ± 12 μs	28.5 ± 12 μs	1.03 ± 0.61
Constitutive models/Visco-elastic ∂Ψ∂F	24.3 ± 12 μs	24.6 ± 13 μs	0.988 ± 0.71
Constitutive models/Visco-elastic ∂∂Ψ∂FF	0.0641 ± 0.021 ms	0.0651 ± 0.021 ms	0.984 ± 0.45
Constitutive models/Visco-polyconvex Ψ	0.111 ± 0.002 μs	0.11 ± 0.002 μs	1.01 ± 0.026
Constitutive models/Visco-polyconvex ∂Ψ∂F	0.124 ± 0.003 μs	0.124 ± 0.002 μs	1 ± 0.029
Constitutive models/Visco-polyconvex ∂∂Ψ∂FF	7.45 ± 3.2 μs	6.57 ± 3.4 μs	1.13 ± 0.76
Simulations/StaticMechanicalDirichlet	0.114 ± 0.0081 s	0.113 ± 0.0054 s	1.01 ± 0.086
Simulations/StaticMechanicalNeumann	0.0968 ± 0.02 s	0.0999 ± 0.019 s	0.969 ± 0.27
Simulations/ViscoElastic	9.79 s	10.1 s	0.97
Tensor algebra/Cofactor	0.059 ± 0.002 μs	0.062 ± 0.003 μs	0.952 ± 0.056
Tensor algebra/Det(A)Inv(A')	0.083 ± 0.002 μs	0.084 ± 0.002 μs	0.988 ± 0.033
Tensor algebra/IIsym	0.057 ± 0.003 μs	0.058 ± 0.002 μs	0.983 ± 0.062
Tensor algebra/push_forward_C_to_F	0.178 ± 0.013 μs	0.177 ± 0.016 μs	1.01 ± 0.12
Tensor algebra/×ᵢ⁴	0.055 ± 0.002 μs	0.055 ± 0.002 μs	1 ± 0.051
Tensor algebra/δδ_λ_2d	19 ± 1 ns	19 ± 1 ns	1 ± 0.074
Tensor algebra/δδ_μ_2d	19 ± 1 ns	19 ± 1 ns	1 ± 0.074
time_to_load	2.01 ± 0.046 s	1.98 ± 0.047 s	1.01 ± 0.034

Memory benchmarks

	main	2747719...	main / 2747719...
Constitutive models/Visco-elastic Ψ	0.542 k allocs: 0.0443 MB	0.542 k allocs: 0.0443 MB	1
Constitutive models/Visco-elastic ∂Ψ∂F	0.593 k allocs: 0.0492 MB	0.593 k allocs: 0.0492 MB	1
Constitutive models/Visco-elastic ∂∂Ψ∂FF	1.05 k allocs: 0.0853 MB	1.05 k allocs: 0.0853 MB	1
Constitutive models/Visco-polyconvex Ψ	0 allocs: 0 B	0 allocs: 0 B
Constitutive models/Visco-polyconvex ∂Ψ∂F	0 allocs: 0 B	0 allocs: 0 B
Constitutive models/Visco-polyconvex ∂∂Ψ∂FF	0.187 k allocs: 15.2 kB	0.187 k allocs: 15.2 kB	1
Simulations/StaticMechanicalDirichlet	1.51 M allocs: 0.108 GB	1.51 M allocs: 0.108 GB	1
Simulations/StaticMechanicalNeumann	1.48 M allocs: 0.0927 GB	1.48 M allocs: 0.0927 GB	1
Simulations/ViscoElastic	0.162 G allocs: 12.8 GB	0.162 G allocs: 12.8 GB	1
Tensor algebra/Cofactor	2 allocs: 0.156 kB	2 allocs: 0.156 kB	1
Tensor algebra/Det(A)Inv(A')	4 allocs: 0.25 kB	4 allocs: 0.25 kB	1
Tensor algebra/IIsym	1 allocs: 0.656 kB	1 allocs: 0.656 kB	1
Tensor algebra/push_forward_C_to_F	1 allocs: 0.656 kB	1 allocs: 0.656 kB	1
Tensor algebra/×ᵢ⁴	1 allocs: 0.656 kB	1 allocs: 0.656 kB	1
Tensor algebra/δδ_λ_2d	0 allocs: 0 B	0 allocs: 0 B
Tensor algebra/δδ_μ_2d	0 allocs: 0 B	0 allocs: 0 B
time_to_load	0.149 k allocs: 11.1 kB	0.149 k allocs: 11.1 kB	1