feat: add new database entities and migration for proxy configuration

- Introduced `log_setting`, `proxy_config`, `proxy_setting`, `rewrite_rule`, `server_block`, `ssl_certificate`, and `upstream` entities with their respective fields and relationships.
- Updated `mod.rs` and `prelude.rs` to include new entities.
- Created migration script to set up new tables and relationships in the database.
- Altered existing `agents` table to include a foreign key reference to `agent_group`.

apps/nxmesh-master/src/db/entities/config_inheritance.rs

@@ -0,0 +1,37 @@
+//! `SeaORM` Entity, @generated by sea-orm-codegen 2.0
+
+use sea_orm::entity::prelude::*;
+use serde::{Deserialize, Serialize};
+
+#[derive(Clone, Debug, PartialEq, Eq, DeriveEntityModel, Serialize, Deserialize)]
+#[sea_orm(table_name = "config_inheritance")]
+pub struct Model {
+    #[sea_orm(primary_key, auto_increment = false)]
+    pub id: Uuid,
+    pub child_config_id: Uuid,
+    pub parent_config_id: Uuid,
+    pub priority: Option<i32>,
+    pub applied_at: DateTime,
+}
+
+#[derive(Copy, Clone, Debug, EnumIter, DeriveRelation)]
+pub enum Relation {
+    #[sea_orm(
+        belongs_to = "super::proxy_config::Entity",
+        from = "Column::ChildConfigId",
+        to = "super::proxy_config::Column::Id",
+        on_update = "Cascade",
+        on_delete = "Cascade"
+    )]
+    ProxyConfig2,
+    #[sea_orm(
+        belongs_to = "super::proxy_config::Entity",
+        from = "Column::ParentConfigId",
+        to = "super::proxy_config::Column::Id",
+        on_update = "Cascade",
+        on_delete = "Cascade"
+    )]
+    ProxyConfig1,
+}
+
+impl ActiveModelBehavior for ActiveModel {}