Logging API endpoint

[svenrademakers]

Is your feature request related to a problem? Please describe.
Currently, inside the code, a Sender object is passed around to provide (eventually) log messages back to the client. I see an opportunity to improve this architecture, simultaneously adding value to the bmcd.

Describe the solution you'd like
A more elegant way is to create a logging Sink for the log crate that sends log messages to HTTP clients that are subscribed for logging information. This way, all the log statements inside our code debug!(), error!() warn!() are automatically sent, eliminating the need to use Sender objects.
This solution needs to be redfish compliant.

https://www.dmtf.org/sites/default/files/standards/documents/DSP0268_2023.1.pdf

Acceptance Criteria

• There is a logging sink that hooks into Rust's logging framework
• Bmcd implements the LogService and is exposed over the Restful API
• Logging instances inside the code using Sender objects are replaced with conventional log statements