Ensure basic bundler rake tasks are loaded

[chrisbloom7]

The ruby contrib readme states we should be able to build the gem using bundle exec rake build, but as-is bundler errors with Don't know how to build task 'build' and rake -T shows only the locally defined tasks

$ bundle exec rake -T
rake clean         # Remove any temporary products
rake clobber       # Remove any generated files
rake compile       # Compile all the extensions
rake compile:cext  # Compile cext

Bundler 2.x gems typically include bundler/gem_tasks instead of bundler/gem_helper. Updating the Rakefile likewise gives us the bundler tasks for building the project

$ bundle exec rake -T
rake build            # Build trilogy-2.0.0.gem into the pkg directory
rake build:checksum   # Generate SHA512 checksum if trilogy-2.0.0.gem into the checksums directory
rake clean            # Remove any temporary products
rake clobber          # Remove any generated files
rake compile          # Compile all the extensions
rake compile:cext     # Compile cext
rake install          # Build and install trilogy-2.0.0.gem into system gems
rake install:local    # Build and install trilogy-2.0.0.gem into system gems without network access
rake release[remote]  # Create tag v2.0.0 and build and push trilogy-2.0.0.gem to rubygems.org

cc/ @eileencodes

[eileencodes]

Thanks @chrisbloom7 - can you merge main? I added #5 so that the CI will run on your PR.

[chrisbloom7]

@eileencodes all set!