Refactor Library

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`

theseus_cli/Cargo.toml

@@ -8,7 +8,7 @@ edition = "2018"
 
 [dependencies]
 theseus = { path = "../theseus" }
-daedalus = "0.1.12"
+daedalus = {version = "0.1.15", features = ["bincode"]}
 tokio = { version = "1", features = ["full"] }
 tokio-stream = { version = "0.1", features = ["fs"] }
 futures = "0.3"
@@ -18,4 +18,7 @@ dialoguer = "0.10"
 eyre = "0.6"
 tabled = "0.5"
 dirs = "4.0"
-uuid = {version = "0.8", features = ["v4", "serde"]}
+uuid = {version = "0.8", features = ["v4", "serde"]}
+# TODO: merge logging with paris logging
+pretty_env_logger = "0.4"
+log = "0.4.14"