Consider automatically generating "new package" template

Maybe better suited to https://github.com/ros-infrastructure/rosdistro-reviewer When a new package is added to an existing distribution, reviewers populate a template like: ``` - [ ] At least one of the following must be present - [ ] Top level license file: - [ ] Per package license files: - [ ] License is [OSI-approved](https://opensource.org/licenses): - [ ] License correctly listed in package.xmls - [ ] Public source repo: - [ ] Source repository contains ROS packages - [ ] Each package meets [REP-144](https://www.ros.org/reps/rep-0144.html) naming conventions <details><summary>Package name details</summary> $ find . -name "package.xml" -exec grep --color=auto -e "<name>" "{}" ";" <OUTPUT HERE> </details> <details><summary>License details</summary> $ find . -name "package.xml" -exec grep --color=auto -e "<license>" "{}" "+" <OUTPUT HERE> </details> ``` We should automate this.