This adds support for using templated/dynamic urls in routes.
* refactor interpolateString into utils and add interpolation support for app plugin routes.
* cleanup and add error check for url parse failure
* add docs for interpolated route urls
Closes#16835
* speed up circleci build
* convert build.sh to functions and add args for different build types
* add yarn cache
* add build latest to packaging step
* fast build should not try to tag non-amd builds
* remove signing step for prs-and-branches
Brian Gann