Exported metadata models and http

Author: rg911

src/infrastructure/infrastructure.ts

@@ -20,6 +20,7 @@ export * from './ChainHttp';
 export * from './DiagnosticHttp';
 export * from './Http';
 export * from './MosaicHttp';
+export * from './MetadataHttp';
 export * from './NamespaceHttp';
 export * from './TransactionHttp';
 export * from './Listener';

src/model/model.ts

@@ -58,6 +58,11 @@ export * from './mosaic/NetworkHarvestMosaic';
 export * from './mosaic/MosaicNames';
 export * from './mosaic/MosaicRestrictionType';
 
+// Mosaic
+export * from './metadata/Metadata';
+export * from './metadata/MetadataEntry';
+export * from './metadata/MetadataType';
+
 // Namespace
 export * from '../service/Namespace';
 export * from './namespace/AliasType';