<Tests/TH2M> add radial heatpipe test with static gas phase

...saturated/heatpipe_radial_static_gas/boundary8_bottom.vtu

...unsaturated/heatpipe_radial_static_gas/boundary8_left.vtu

...nsaturated/heatpipe_radial_static_gas/boundary8_right.vtu

..._unsaturated/heatpipe_radial_static_gas/boundary8_top.vtu

...a/TH2M/TH_unsaturated/heatpipe_radial_static_gas/disc.vtu

.../TH_unsaturated/heatpipe_radial_static_gas/disc_quad8.vtu

..._unsaturated/heatpipe_radial_static_gas/disc_quad8_cr.vtu

...TH2M/TH_unsaturated/heatpipe_radial_static_gas/domain.vtu

...ta/TH2M/TH_unsaturated/heatpipe_radial_static_gas/geo.gml

...heatpipe_radial_static_gas/heatpipe_radial_static_gas.prj

..._radial_static_gas/results_heatpipe_radial_static_gas.pvd

...as/results_heatpipe_radial_static_gas_ts_0_t_0.000000.vtu

...lts_heatpipe_radial_static_gas_ts_10_t_1000000.000000.vtu

...sults_heatpipe_radial_static_gas_ts_1_t_100000.000000.vtu

...sults_heatpipe_radial_static_gas_ts_2_t_200000.000000.vtu

...sults_heatpipe_radial_static_gas_ts_3_t_300000.000000.vtu

...sults_heatpipe_radial_static_gas_ts_4_t_400000.000000.vtu

...sults_heatpipe_radial_static_gas_ts_5_t_500000.000000.vtu

...sults_heatpipe_radial_static_gas_ts_6_t_600000.000000.vtu

...sults_heatpipe_radial_static_gas_ts_7_t_700000.000000.vtu