Add binstubs

Why is this change being made?

Create binstubs with bundler install --binstubs.

This will make it easier to run all relevant commands with ./bin/command rather than bundle exec command.

Does this MR meet the acceptance criteria?

Assign to DRI

• Did you assign this change to the correct DRI of the page or information you are changing?

Conformity

• Added description to this MR explaining the reasons for the proposed change, per say-why-not-just-what