users: migrations, queries, users crate: create user, get first admin user

crates/users/src/lib.rs

@@ -0,0 +1,22 @@
+mod database;
+mod error;
+
+use chrono::{DateTime, Utc};
+use id::UserID;
+
+pub use crate::error::Error;
+
+#[derive(Debug)]
+pub struct User {
+    id: UserID,
+    created_at: DateTime<Utc>,
+    updated_at: DateTime<Utc>,
+    is_admin: bool,
+    username: String,
+    name: Option<String>,
+    email: Option<String>,
+    password: Option<String>,
+    password_recover: Option<String>,
+    paper_key: Option<String>,
+    is_archived: bool,
+}