interPhaseChangeFoam: No need to check continuity error and the velocity divergence defines the compressibility effect

BUG: static variable initialisation: Cannot rely on other static variables to be initialised when initialising a static variable

for gasThermoType based on type of energy solved

and instanciating reactionThermos, Reactions, chemistrySolver
solidChemistrySolvers and readers.
chemkinReader uses the sensibleEnthalpy base of thermoType