feat: rewrite in rust

[erhant]

• Rewrite the launcher in Rust
• Use inquire for interactive settings
• Use clap for outermost CLI
• The env file overwrite for a variable FOO_BAR shall be done such that the last line that start with FOO_BAR= should be replace with the new FOO_BAR=<new-value>.
• Allow env selection & configuration w.r.t path.
  • Port configuration settings, set to 0 for "random port".
  • Ollama settings
  • Wallet settings
  • Model choice menu
• Use self_update to update the node when there is a new release.
  • Launcher will update its own binary when it has a new version, but will not restart itself; the updated version will run
  • Compute will be updated by the launcher when it has a new version, and will be restarted
• Add port detection ahead of time, e.g. report that listen address is busy and such
• Add log level editor per respective module
• Add Enum iterator to Ollama Workflow models and use that within the model lister (added with feat: enum iterators andthattoo/ollama-workflows#34)
• Closes dkn_compute binaries #5 with a retry mechanism on version checks