Fix the circular dependency by adding a new BasicAuthProvider interface to
wrap the basic auth values.
Add unit tests for the hash functions.
Refactor functions to use the new basic auth provider interface.
Update how the basic auth credentials are stored in the application to use
a hashed value instead of the raw value. This prevents the raw value from
being accidentally leaked.
Add new `auth` package for functions related to authentication.
Add check to ensure basic auth username and password are both set or both
unset. It isn't valid to set one without the other.
Update README file to include the new CLI parameters.
Add new CLI parameters to enable protecting the API endpoints with basic
auth authentication.
Wrap the server endpoints in a new authMiddleware that protects it using
the provided basic auth credentials (if set).
Update the sample Grafana dashboard to use a variable for the data
source. All panels have been updated to use the new variable. This makes
it easier to import the dashboard and have it work with different data
sources.
Hector