Various small fixes mostly from cppcheck

See merge request ogs/ogs!4964

The value k could be pointing to the end of the vector if the for loops runs
through without fulfilling the if-condition.

Resolves cppcheck warning about missing return statement.

Use shape matrix cache in LiquidFlow process to reduce memory consumption

See merge request ogs/ogs!4962

Pass the solution vectors of all coupled processes to setInitialConditions

See merge request ogs/ogs!4950

 to NumLib

to avoid data copying

setInitialConditionsConcrete

From std::vectory<double> to Eigen::VectorXd

Add Newton nonlinear iteration feature in the HeatTransportBHE process

See merge request ogs/ogs!4956

Add Nonlinear Solver Section to Heat_Transport_BHE

removing extra blank line

remove tailing white space

add more description

use xml in the test config

fix running error

fix xml patch error

realize BHE Jacobi assembler

fix compiling error

fix run-time error

remove assert

fix BHE

should be -=, bhe part

set local M and K to zero, soil part

use BheLocalMatrixType and BheLocalVectorType

realize Jakobi assember

fix run-time error

correct size

fix soil

should be -=, soil part

set local M and K to zero, soil part

TH2M; extract Permeability data and model

See merge request ogs/ogs!4951

Move after constitutive models evaluation and remove no longer necessary
setting of equivalent plastic strain, total stress, and mechanical
strain.