Removed GridapGmsh from direct dependencies

[miguelmaso]

Behaviour change: GridapGmsh must be imported in a simulation script

[github-actions]

Benchmark Results (Julia v1)

Time benchmarks

	main	359c60b...	main / 359c60b...
Constitutive models/Visco-elastic Ψ	0.0472 ± 0.034 ms	0.049 ± 0.034 ms	0.963 ± 0.96
Constitutive models/Visco-elastic ∂Ψu	0.0536 ± 0.0017 ms	0.0549 ± 0.0025 ms	0.977 ± 0.055
Constitutive models/Visco-elastic ∂Ψuu	0.103 ± 0.012 ms	0.103 ± 0.013 ms	1 ± 0.17
Simulations/StaticMechanicalDirichlet	0.142 ± 0.0089 s	0.148 ± 0.01 s	0.966 ± 0.091
Simulations/StaticMechanicalNeumann	0.142 ± 0.014 s	0.138 ± 0.022 s	1.03 ± 0.19
Simulations/ViscoElastic	19 s	19.3 s	0.988
Tensor algebra/Cofactor	0.07 ± 0.01 μs	0.06 ± 0.01 μs	1.17 ± 0.26
Tensor algebra/Det(A)Inv(A')	0.14 ± 0.01 μs	0.131 ± 0.01 μs	1.07 ± 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	2.58 ± 0.014 s	2.61 ± 0.043 s	0.99 ± 0.017

Memory benchmarks

	main	359c60b...	main / 359c60b...
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