Fix packing data files and add build target, bump version to 0.2.1 - #21

Unreachable code detected

Unreachable code detected

Possible null reference assignment.

Non-nullable property 'MemberType' must contain a non-null value when exiting constructor. Consider adding the 'required' modifier or declaring the property as nullable.

Non-nullable property 'MemberName' must contain a non-null value when exiting constructor. Consider adding the 'required' modifier or declaring the property as nullable.

Non-nullable property 'ClassName' must contain a non-null value when exiting constructor. Consider adding the 'required' modifier or declaring the property as nullable.

Non-nullable property 'FileName' must contain a non-null value when exiting constructor. Consider adding the 'required' modifier or declaring the property as nullable.

'MetaClassBuilder.CalculateCrc32()' is obsolete: 'This function is deprecated. Prefer to directly initialize the class's CRC32 in the constructor.'

Non-nullable property 'VoiceDataBuffer' must contain a non-null value when exiting constructor. Consider adding the 'required' modifier or declaring the property as nullable.