Feature/client trace handler

[MS-Painter]

Closes #27

Adds:

• Handler tracing. Adds client command to get live logs from a handler or all handlers as they're happening.

Changes:

• Cleanup use generated_types statement in handler_service.
• Remove ACTION_TYPES const and None PipelineActions variant using strum.
• Cleanup subcommand runtimes iteration phase and exit iteration if found subcommand to execute.
• Cleanup subcommands' runtimes by providing client connection if needed.
• Bump (and enforce) package versions: tokio == "1.6.1" tonic = "0.4.3" regex = "1.5.4" chrono = "0.4.19" toml = "0.5.8" typetag = "0.1.7" futures = "0.3.15" serde_json = "1.0.64" crossbeam = "0.8.1" tracing = "0.1.26" tracing-subscriber = "0.2.18"