* Initial authentication implementation
* Store user info in the database, improve encapsulation in profiles
* Add user list, remove unused dependencies, add spantraces
* Implement user remove, update UUID crate
* Add user set-default
* Revert submodule macro usage
* Make tracing significantly less verbose
The launcher code was in a position ripe for sphagetti, so this rewrites it in a more robust way.
In addition to cleaner code, this provides the following changes:
- Removal of obsolete Mojang authentication
- The rebasing of some internal state into a Sled database
- Tweaks which make some internal mechanisms more robust (e.g. profiles which fail to load can be removed)
- Additional tooling integration such as direnv
- Distinct public API to avoid messing with too much internal code
- Unified error handling in the form of `theseus::Error` and `theseus::Result`
