feat: Implement person and tag management services

- Added `Person` and `Tag` models to the core library.
- Created `PersonService` and `TagService` traits with implementations for managing persons and tags.
- Introduced repositories for `Person`, `Tag`, `FaceRegion`, and `PersonShare` with PostgreSQL support.
- Updated authorization logic to include permissions for accessing and editing persons.
- Enhanced the schema to support new models and relationships.
- Implemented database migrations for new tables related to persons and tags.
- Added request and response structures for API interactions with persons and tags.

libertas_core/src/models.rs

@@ -93,6 +93,7 @@ pub struct Album {
     pub updated_at: chrono::DateTime<chrono::Utc>,
 }
 
+#[derive(Clone, Debug)]
 pub struct Person {
     pub id: uuid::Uuid,
     pub owner_id: uuid::Uuid,
@@ -100,6 +101,7 @@ pub struct Person {
     pub thumbnail_media_id: Option<uuid::Uuid>,
 }
 
+#[derive(Clone, Debug)]
 pub struct FaceRegion {
     pub id: uuid::Uuid,
     pub media_id: uuid::Uuid,
@@ -150,4 +152,40 @@ pub struct AlbumShare {
 pub struct MediaBundle {
     pub media: Media,
     pub metadata: Vec<MediaMetadata>,
+}
+
+#[derive(Clone, Debug)]
+pub struct Tag {
+    pub id: uuid::Uuid,
+    pub name: String,
+}
+
+#[derive(Debug, Clone, Copy, PartialEq, Eq, Deserialize)]
+pub enum PersonPermission {
+    View,
+    CanUse,
+}
+
+impl PersonPermission {
+    pub fn as_str(&self) -> &'static str {
+        match self {
+            PersonPermission::View => "view",
+            PersonPermission::CanUse => "can_use",
+        }
+    }
+}
+
+impl From<&str> for PersonPermission {
+    fn from(s: &str) -> Self {
+        match s {
+            "can_use" => PersonPermission::CanUse,
+            _ => PersonPermission::View,
+        }
+    }
+}
+
+pub struct PersonShare {
+    pub person_id: uuid::Uuid,
+    pub user_id: uuid::Uuid,
+    pub permission: PersonPermission,
 }