<Belfast> Add Ticks

[NBelfast]

1. bug fix: 1.1. incorrect note.timeStamp in case BPM (Beats Per Minute) is not equal to 60 1.2 incorrect unit tests
2. add refactoring: 2.1. remove redundancy in property names 2.2. move "magic data" to constants and enums 2.3. reorganize code
3. add new feature: 3.1. add ticks
4. unit tests: 4.1 add new unit tests

Comments:

• add ticks as it is more convenience way to work with note start time instead of timestamp. Moreover, the AudioToolbox framework provides note timestamp using BPM = 60 and TPB (Ticks Per Beat) = 480. As a result timestamp for diff BPM is incorrect

[NBelfast]

Hello, Please verify changes. You can reach me in the Telegram in case any further discussion required. My contact in Telegram is Belfast. Thank you.

[matsune]

Sorry for my too late response… Thank you for your contribution.