fix: bulma instructions | rails | actioncable

[sean-garwood]

• @use: "bulma" instead of @import
• import hangouts.scss in application.scss
  • not sure if necessary, but it's what worked
• instructions for recompiling assets
  • ./bin/dev
  • rails assets:precompile

chore: remove bundle exec | rails | actioncable

Removes redundant bundle exec from rails commands

see https://old.reddit.com/r/rails/comments/119v666/difference_between_rails_dbmigrate_and_bundle/j9p0dm0/

Because

Had some trouble getting bulma to work, so dug in a bit and found the solutions. Added to this lesson

This PR

• @use: "bulma" instead of @import
• import hangouts.scss in application.scss
  • not sure if necessary, but it's what worked
• instructions for recompiling assets
  • ./bin/dev
  • rails assets:precompile

chore: remove bundle exec | rails | actioncable

• Removes redundant bundle exec from rails commands

Issue

Closes #XXXXX

Additional Information

• bundle exec rails soft-deprecated
• My self Q/A in discord#rails-help

Pull Request Requirements

• [x] I have thoroughly read and understand The Odin Project curriculum contributing guide
• [x] The title of this PR follows the location of change: brief description of change format, e.g. Intro to HTML and CSS lesson: Fix link text
• [x] The Because section summarizes the reason for this PR
• [x] The This PR section has a bullet point list describing the changes in this PR
• [x] If this PR addresses an open issue, it is linked in the Issue section
• [x] If any lesson files are included in this PR, they have been previewed with the Markdown preview tool to ensure it is formatted correctly
• [x] If any lesson files are included in this PR, they follow the Layout Style Guide