add tests for rdmft

Author: JGHan7

tests/PP_ORB/Si_gga_7au_100Ry_2s2p1d.orb

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+INPUT_PARAMETERS 
+#Parameters (1.General)
+suffix           autotest
+calculation      scf
+                 
+#nbands			 8
+symmetry         -1
+                 
+#Parameters (2.Iteration)
+ecutwfc          50
+scf_thr          1e-7
+scf_nmax         100
+cal_force        0
+cal_stress       0
+#Parameters (3.Basis)
+basis_type       lcao
+                 
+#Parameters (4.Smearing)
+smearing_method  gauss
+smearing_sigma   0.002
+                 
+#Parameters (5.Mixing)
+mixing_type      broyden
+#mixing_beta      0.3
+#gamma_only       1
+ks_solver        genelpa
+
+#Parameters (5.rdmft)
+ab_initio_type      rdmft
+dft_functional      cwp22
+exx_hse_omega       0.33
+rdmft_power_alpha   0.656

tests/integrate/1001_NO_Si2_dzp_rdmft/INPUT

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+K_POINTS
+0
+Gamma
+2 3 2 0 0 0

tests/integrate/1001_NO_Si2_dzp_rdmft/KPT

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+ATOMIC_SPECIES
+Si 14.000 ../../PP_ORB/Si_ONCV_PBE_FR-1.1.upf
+
+NUMERICAL_ORBITAL
+../../PP_ORB/Si_gga_7au_100Ry_2s2p1d.orb
+
+LATTICE_CONSTANT
+10.2
+
+LATTICE_VECTORS
+0.5 0.5 0.0 		#Lattice vector 1
+0.5 0.0 0.5 		#Lattice vector 2
+0.0 0.5 0.5 		#Lattice vector 3
+
+ATOMIC_POSITIONS
+Cartesian 		#Cartesian(Unit is LATTICE_CONSTANT)
+Si 			#Name of element	
+0.0			#Magnetic for this element.
+2			#Number of atoms
+0.00 0.00 0.00 0 0 0	#x,y,z, move_x, move_y, move_z
+0.25 0.25 0.25 1 1 1

tests/integrate/1001_NO_Si2_dzp_rdmft/STRU

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+Test the various energies obtained when using rdmft to calculate solid Si, KPT is 232

tests/integrate/1001_NO_Si2_dzp_rdmft/jd

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+etotref -206.4590116537501956
+etotperatomref -103.2295058269
+
+The following energy units are in Rydberg:
+E_TV_RDMFT_ref 4.9157156831
+E_hartree_RDMFT_ref 1.2841029965
+Exc_cwp22_RDMFT_ref -4.4745111262
+E_Ewald_ref -16.8997586085
+E_entropy_ref -0.0000000000
+E_descf_ref 0.0000000000
+Etotal_RDMFT_ref -15.1744510551
+Exc_ksdft_ref -2.4643530992
+E_exx_ksdft_ref -2.0101579851
+
+totaltimeref 112.36