Added timescaledb_toolkit

[jhualpa]

Checklist:

• Have you added an explanation of what your changes do and why you'd like them to be included?
• Have you updated or added documentation for the change, as applicable?
• Have you tested your changes on all related environments with successful results, as applicable?

Type of Changes:

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)

What is the current behavior? (link to any open issues here)
Lack of support for extra time series functions not included in extension timescaledb

What is the new behavior (if this is a feature change)?
Added new time series functions as part of the extension timescaledb_toolkit which complete the time series related functions needed

Other information: