Project revamp

[eddumelendez]

• Deprecate cli support
• Support testcontainers/ryuk as resource reaper
• Read tc.host from ~/.testcontainers.properties to connect with http client. See issue related to the docker client
• Add User-Agent with value tc-rust/<version>, version should be the version from Cargo.toml

  
  ### Tasks

• [x] Deprecate cli client support (provide sync version with http client under the hood)
• [x] Implement docker host configuration (including tc.host)
• [ ] https://github.com/testcontainers/testcontainers-rs/issues/576
• [ ] https://github.com/testcontainers/testcontainers-rs/issues/577

[DDtKey]

I've extracted separate issues for remaining tasks. Main part is done within #575, so closing this issue and let's track new issues separately.