NDM Tracking Issue

[matzipan]

• Remove nom from the KVN parser code #114
• Unify the two proc macro chains #115
• Implement the OEM KVN parser #117
• Handle empty whitespace lines in the KVN parser #119
• Add support for ddd day format and update docs #120
• Implement deserializer for UserDefinedType and update docs #118
• No KVN test for OCM?
• Add KVN tests #121
• Set the right value for with_unit for the KVN parser #122
• Implement missing ODM message types #123
• Cover error handling and error transformation code with unit tests #124
• Replace the unwraps into expects into the kvn proc macro code #125