refactor: structure of an hexagonal architecture

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

Cargo.toml

@@ -3,26 +3,26 @@ cargo-features = ["codegen-backend"]
 [profile.dev]
 codegen-backend = "cranelift"
 
-[package]
-name = "minauthator"
-description = "Identity provider and OAuth2 server for an small-scale organization."
-version = "0.1.0"
-edition = "2021"
+[workspace]
+members = [
+    "lib/kernel",
+    "lib/utils",
+    "lib/http_server",
+    "lib/admin_cli"
+]
 
-[dependencies]
+[workspace.dependencies]
 # commons utils
 anyhow = "1.0"
 fully_pub = "0.1"
-argon2 = "0.5"
 strum = "0.26.3"
 strum_macros = "0.26"
 uuid = { version = "1.8", features = ["serde", "v4"] }
 dotenvy = "0.15.7"
-base64 = "0.22.1"
-rand = "0.8.5"
-rand_core = { version = "0.6.4", features = ["std"] }
 url = "2.5.3"
-argh = "0.1" # for CLI
+
+# CLI
+argh = "0.1"
 
 # Async
 tokio = { version = "1.40.0", features = ["rt-multi-thread"] }
@@ -34,7 +34,6 @@ env_logger = "0.11"
 # Serialization
 serde = { version = "1.0", features = ["derive"] }
 serde_json = "1.0"
-serde_urlencoded = "0.7.1"
 toml = "0.8"
 
 chrono = { version = "0.4", features = ["serde"] }
@@ -43,21 +42,6 @@ chrono = { version = "0.4", features = ["serde"] }
 sqlx = { version = "0.7.4", features = ["sqlite", "runtime-tokio", "chrono", "uuid"] }
 redis = { version = "0.27.3", default-features = false, features = ["acl"] }
 
-# Web
-axum = { version = "0.7.7", features = ["json", "multipart"] }
-axum-extra = { version = "0.9.4", features = ["cookie"] }
-axum-template = { version = "2.4.0", features = ["minijinja"] }
-axum_typed_multipart = "0.13.1"
-minijinja = { version = "2.1", features = ["builtins"] }
-# to make work the static assets server
-tower-http = { version = "0.6.1", features = ["fs"] }
-
 # Auth utils
 totp-rs = "5.6"
-minijinja-embed = "2.3.1"
-axum-macros = "0.4.2"
-jsonwebtoken = "9.3.0"
-time = "0.3.36"
 
-[build-dependencies]
-minijinja-embed = "2.3.1"