Time_options constructor Null safety

1. spine_client
2. time_options.pb
3. Time_options
4. Time_options constructor

Time_options class

1. Constructors
2. Time_options
3. Properties
4. hashCode
5. runtimeType
6. Methods
7. noSuchMethod
8. toString
9. Operators
10. operator ==
11. Static properties
12. when
13. Static methods
14. registerAllExtensions