[ENH] Adding missing tags in forecasting template and other extension templates

Is your feature request related to a problem? Please describe. Currently for adding new forecasters , templates present at extension_templates/ are being used such as forecasting.py but there are some new tags that are missing from template such as "property:randomness", "capability:random_state" as mentioned here

Recipe:

• find tags in registry._tags.py that are not present in the extension templates in extension_templates- only the "full templates" (not simple or supersimple templates)
• add the undocumented tags to the full extension templates in the extension_templates folder

Describe the solution you'd like Add these new tags from registry and update templates wherever possible , so it is easier for new contributors to add algorithms.