Project Templates docs (#3054)

* Add project template docs

* Update docs

* Update docs

* Tidy-up

* Updates

* Fix image name

* Fix image name

* New images, some edits.

* New images, some edits.

* Rewrites

* updates

* tidy-up

* Fixing linting issue

* Tidy-up troubleshooting

* best practices updates

* Validation message

* Include initial cut of project template consumers

* Include initial cut of project template consumers

* Rename to templated projects

* Fix linting issues, tidy-up

* Add installation guide

* Edits

* Addressing PR feedback

* Pr feedback tidy up

* Include download link

* Addressing Marks PR comments

* Addressing Ryans Pr comments

* Remove future direction placeholders & runbooks/triggers comments

Author: IsaacCalligeros95