Create a data-checker

[C451]

The experience from TVJS project shows that many errors come from incorrect data provided to the library. The idea is to make a data-analyzer that can spot common mistakes, e.g. timestamp duplicates. Data should be checked against the data structure.

List of common data-bugs:

• mistakes in the data structure (pane with no arrays, etc)
• timestamp duplicates
• timestamp that not aligned with the main timeframe (e.g. 1668174129877 when tf is 60000 ms)
• plain wrong order of timestamps, reverse or not sorted by time
• ... to be continued

The app should provide user with error, warnings and suggestions