Simplified projections.
S-47168

- Added events samples and an script to import them.
- Better names for the scripts.
- Added one projection for the events.
mockup for commit stream tab

S-47665
Refactoring to import scripts.

- Added helpers that are common for the scripts.
- Started import full commits which will get all the data from the
commit.
Made Import-FullCommits work running backwards.

Improvements to Import-Commits and modularization
S-47665
Import-FullCommits now it only uses one request for the push.

S-47665
Small fix.

S-47665
Fixing eventStore variable typo.