refactor: structure of an hexagonal architecture

Created a kernel crate to store models and future action implementations.
Will be useful to create admin cli.

lib/admin_cli/Cargo.toml

@@ -0,0 +1,11 @@
+[package]
+name = "admin_cli"
+edition = "2021"
+
+[dependencies]
+anyhow = { workspace = true }
+fully_pub = { workspace = true }
+
+[[bin]]
+name = "minauthator-admin"
+path = "src/main.rs"

lib/admin_cli/src/main.rs

@@ -0,0 +1,6 @@
+use anyhow::Result;
+
+fn main() -> Result<()> {
+    println!("Starting minauthator admin CLI");
+    Ok(())
+}