Slack with versioned context (demisto#7567)

* mock

* vcontext

* recursion

* finish function

* tests pass

* fix

* versioned int context, various fixes

* lint

* minor

* remove if

* update API

* more API fixes...

* more fixes

* lint

* update test pb

* Refresh the context and delete mirror on close

* fix

* tests

* remove ignore type

* remove type ignores, fix log

* fix regex

* cr fixes #1

* cr fixes #2

* cr fixes #2

* python 2...

* python 2...

* python 2...

* fix

* fix

* py3 tests

* fix doc

* CR fixes #3

* hint

* fix rtype

* fix python2 tests

* ignore randint

* lint

* lint

* delete workaround

* Updated

* lint

Co-authored-by: Alex Fiedler <[email protected]>

Author: liorblob