[WIP] Update to V30RC01

• Strings must not be empty
• Constraints are now included in the respective class descriptions (Go through here, what is missing in our implementation, total 50 Constraints) AASd-X: 2, 3, 5, 6, 7, 8, 12, 14, 20, 21, 22, 23, 26, 50, 51, 52a, 52b, 53, 54, 55, 55, 56, 57, 57, 58, 59, 60, 61, 62, 63, 64, 65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76, 77, 80, 81, 90, 92, 93, 100
• AssetIdentificationModel was added to the AAS
• ConceptDictionaries were removed
• SemanticID only optional
• Key.local was removed
• Entity.asset => Entity.globalAssetId and Entity.externalAssetId
• New class Extension
• New class HasExtension
• New class IdentifierKeyValuePair
• DisplayName for referables introduced

fix #114 #117 #118 #121 #125 (closed)