Adapt Bar Connector from API Template

[adeutscher]

Main changes:

• Add an adaptation of the Bar connector from the API template. Like with the API template, Bar is a stand-in for an OAuth-protected API service.
• This adaptation of the Bar connector indefinitely respects reasons to wait such as an HTTP 429 response.
• Local testing now include wiremock-bar service and associated resources.
• Bar Connector is described further in docs/bar-connector.md.

Other changes:

• Standardize environment variables described in test/local/readme.md
• Set cursor rules to standardize output.

Tests run:

• Job logic runner respects configurable access to Bar connector.
• Job logic runner successfully makes a standard call to Bar connector.
• When a sleep time of 429 is provided, the job logic runner respects the resulting HTTP 429 returned by WireMock