Test & Framework7

• Few typo in documentation.
• New framework7 parameter for golem_scaffold to create plug and play Framework7 powered Shiny app.
• New use_loader_framework7 to support Framework7 projects.
• Added ease_lit to use Lit in a project.
• Deprecate include_tests (see below)
• include_tests_mocha supercedes include_tests
• Add include_tests_peeky.
• Updating packages prints correct messages.
• Added scaffold_bare to create empty scaffolds with no code.
• Added option to scaffold golem applications with framework7
  #13 + added
  respective loader.
• Added engine_check to check whether npm and/or yarn is
  currently and can be found: necessary to run anything with
  packer.
• Simplify check for packer, no longer requires dev directory
  to be present.
• Added put_test to add a testthat check to ensure files are
  minified.
• Added include_action_check to add a Github workflow that
  checks that the files have been minified on commit.
• Remove deprecated include_tests.
• Fix use of React #16
• Fix widget externals configuration where wrong names were
  inserted.