#210 - Add Basic Auth to direct broker

[michael-82]

• add username and password env vars
• add auth interceptors to both fhir (cql) and spring (flare) clients
• (unrelated...add volume to docker compose file)

[codecov[bot]]

Codecov Report

Attention: 2 lines in your changes are missing coverage. Please review.

Comparison is base (13a656b) 74.12% compared to head (fd7562e) 74.48%.

Files	Patch %	Lines
...ackend/query/broker/direct/DirectSpringConfig.java	89.47%	0 Missing and 2 partials :warning:

Additional details and impacted files

```diff @@ Coverage Diff @@ ## develop #211 +/- ## ============================================= + Coverage 74.12% 74.48% +0.35% - Complexity 523 530 +7 ============================================= Files 124 124 Lines 2211 2226 +15 Branches 105 106 +1 ============================================= + Hits 1639 1658 +19 + Misses 512 506 -6 - Partials 60 62 +2 ```

:umbrella: View full report in Codecov by Sentry.
:loudspeaker: Have feedback on the report? Share it here.