Add v2 regional missense constraint to GraphQL API

Author: rileyhgrant

graphql-api/src/graphql/types/constraint/gnomad-regional-missense-constraint.graphql

@@ -0,0 +1,18 @@
+type GnomadV2RegionalMissenseConstraintRegion {
+  chrom: String
+  start: Int
+  stop: Int
+  aa_start: String
+  aa_stop: String
+  obs_mis: Int
+  exp_mis: Float
+  obs_exp: Float
+  chisq_diff_null: Float
+  p_value: Float
+}
+
+type GnomadV2RegionalMissenseConstraint {
+  has_no_rmc_evidence: Boolean
+  passed_qc: Boolean
+  regions: [GnomadV2RegionalMissenseConstraintRegion]
+}

graphql-api/src/graphql/types/gene.graphql

@@ -65,6 +65,8 @@ type Gene {
   pext: Pext
 
   gnomad_constraint: GnomadConstraint
+  gnomad_v2_regional_missense_constraint: GnomadV2RegionalMissenseConstraint
+
   exac_constraint: ExacConstraint
   exac_regional_missense_constraint_regions: [ExacRegionalMissenseConstraintRegion!]