Improve the CI

[cchudant]

This is a mini roadmap for the CI. List of things we might want in the CI (medium term plan):

• [x] client: build it
  • [ ] client: publish on pypy
• [x] server: build it
• [x] server: build the docker images
  • [ ] server: publish on dockerhub
• [x] server: cargo check
  • [x] clippy
  • [x] cargo audit
• [ ] server: run unit tests
  • [ ] server: run unit tests using miri
• [x] e2e: run end to end tests
  • [ ] run in hardware mode (we need an SGX-enabled github runner)
  • [ ] run in azure / on the other cloud providers we officially support
• [ ] test coverage
  • [ ] server
  • [ ] client

Focus is on end to end tests and building client/server packages for now.

Side goals:

• [x] end to end tests (test the server and client together as a whole)
  • I am currently preparing a pull request on that
• [ ] more unit tests on the rust side

Potential future work:

• benchmarks, and run them in CI — be informed of regressions/improvements in term of inference speed

[cchudant]

Related: https://github.com/rustsec/rustsec Could be a good idea to integrate that

[cchudant]

Related: https://github.com/rustsec/rustsec Could be a good idea to integrate that

Cargo audit support done in #24 but temporarily disabled for now

[cchudant]

Added test coverage reporting to the list