GitLab

Add SpineNet to the Announcements section

Add a milestone for the Object Detection API

Add Context R-CNN

Add MobileDets to the Announcements section

Add a link for DELG

Update a badge

Add a "help wanted" badge

Add new updates

* Update README.md

Add a new section (Announcements)

* Update README.md

Remove description columns from tables
Remove guidelines sections

* Update CONTRIBUTING.md

Add a link to the wiki for guidelines

* Create README_TEMPLATE.md

Add a README template file for a new model

* Create pull_request_template.md

Add a new template for a pull request

* Update README.md

Add a table of contents
Add a new section for archived models and implementations

* Update README.md

Revise "Contributions"

* Update README.md

Update the link to the contribution guidelines

* Update README.md

Update the link to the contribution guidelines.

* Update README.md

Update the link to the contribution guidelines.

* Update README.md

Update the link to the contribution guidelines.

Add a new "Community" directory

* Update CODEOWNERS

Added owners for official and research model folders
Removed owners of removed folders

* Update README.md

Added new introduction messages for the Model Garden

Added a new logo

The tutorial folder has been removed.

Remove non existing samples folder mention