add blastwave2 examples

examples/srhd_blastwave2/avmda.toml

+[EquationOfState]
+eos = "idealgas"
+idealgas_gamma = 1.6666666666666666666667
+
+[SRHD]
+id = "blastwave2"
+bc = "from_id"
+
+[Mesh]
+range = [ -0.5, 0.5 ]
+n = 5
+k = 205
+basis = "lgl"
+periodic = false
+
+[Output]
+every_iteration = 1
+variables       = [ "D", "S", "tau", "p", "rho", "eps", "v", "smoothed_mu" ]
+aligned_ts      = "$(collect(range(0.01,0.4,step=0.01)))"
+enable1d        = true
+
+[Evolution]
+cfl = 0.4
+tend = 0.4
+
+[HRSC]
+method = "av"
+av_method = "mda"
+mda_cmax = 20.0
+
+[TCI]
+method = "entropy_production"

examples/srhd_blastwave2/fv.toml

+[EquationOfState]
+eos = "idealgas"
+idealgas_gamma = 1.6666666666666666666667
+
+[SRHD]
+id = "blastwave2"
+bc = "from_id"
+
+[Mesh]
+range = [ -0.5, 0.5 ]
+k = 1024
+scheme = "FV"
+periodic = false
+
+[Output]
+variables       = [ "D", "S", "tau", "p", "rho", "eps", "v" ]
+aligned_ts      = "$(collect(range(0.01,0.4,step=0.01)))"
+enable1d        = true
+
+[Evolution]
+cfl = 1.0
+tend = 0.4