Multi-physical models: Added type parameters to abstract types

[miguelmaso]

This PR allows to define cleaner multiple dispatches

[github-actions]

Benchmark Results (Julia v1)

Time benchmarks

	main	79b841d...	main / 79b841d...
Constitutive models/Visco-elastic Ψ	0.0489 ± 0.034 ms	0.0473 ± 0.034 ms	1.03 ± 1
Constitutive models/Visco-elastic ∂Ψu	0.0555 ± 0.0023 ms	0.0538 ± 0.0021 ms	1.03 ± 0.059
Constitutive models/Visco-elastic ∂Ψuu	0.104 ± 0.013 ms	0.101 ± 0.011 ms	1.03 ± 0.17
Simulations/StaticMechanicalDirichlet	0.133 ± 0.0068 s	0.136 ± 0.0072 s	0.982 ± 0.072
Simulations/StaticMechanicalNeumann	0.133 ± 0.013 s	0.13 ± 0.011 s	1.02 ± 0.13
Simulations/ViscoElastic	19 s	18.6 s	1.02
Tensor algebra/Cofactor	0.07 ± 0 μs	0.07 ± 0.01 μs	1 ± 0.14
Tensor algebra/Det(A)Inv(A')	0.131 ± 0.01 μs	0.13 ± 0.011 μs	1.01 ± 0.11
Tensor algebra/δδ_λ_2d	30 ± 0 ns	30 ± 0 ns	1 ± 0
Tensor algebra/δδ_μ_2d	30 ± 0 ns	30 ± 0 ns	1 ± 0
time_to_load	2.63 ± 0.047 s	2.65 ± 0.048 s	0.991 ± 0.025

Memory benchmarks

	main	79b841d...	main / 79b841d...
Constitutive models/Visco-elastic Ψ	1.24 k allocs: 0.0777 MB	1.24 k allocs: 0.0777 MB	1
Constitutive models/Visco-elastic ∂Ψu	1.29 k allocs: 0.0826 MB	1.29 k allocs: 0.0826 MB	1
Constitutive models/Visco-elastic ∂Ψuu	2.25 k allocs: 0.149 MB	2.25 k allocs: 0.149 MB	1
Simulations/StaticMechanicalDirichlet	1.51 M allocs: 0.109 GB	1.51 M allocs: 0.109 GB	1
Simulations/StaticMechanicalNeumann	1.48 M allocs: 0.0933 GB	1.48 M allocs: 0.0933 GB	1
Simulations/ViscoElastic	0.326 G allocs: 20.5 GB	0.326 G allocs: 20.5 GB	1
Tensor algebra/Cofactor	1 allocs: 0.0781 kB	1 allocs: 0.0781 kB	1
Tensor algebra/Det(A)Inv(A')	4 allocs: 0.25 kB	4 allocs: 0.25 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