feat: implement system statistics tracking, commit management controllers, and associated database migrations

internal/gen/sqlc/models.go

@@ -129,6 +129,30 @@ type Submission struct {
 	CreatedAt  pgtype.Timestamptz `json:"created_at"`
 }
 
+type SystemStatistic struct {
+	ID                pgtype.UUID        `json:"id"`
+	Date              pgtype.Date        `json:"date"`
+	TotalUsers        int32              `json:"total_users"`
+	TotalProjects     int32              `json:"total_projects"`
+	TotalCommits      int32              `json:"total_commits"`
+	TotalSubmissions  int32              `json:"total_submissions"`
+	TotalMedias       int32              `json:"total_medias"`
+	TotalWikis        int32              `json:"total_wikis"`
+	TotalEntities     int32              `json:"total_entities"`
+	TotalGeometries   int32              `json:"total_geometries"`
+	TotalStorageBytes int64              `json:"total_storage_bytes"`
+	NewUsers          int32              `json:"new_users"`
+	NewProjects       int32              `json:"new_projects"`
+	NewCommits        int32              `json:"new_commits"`
+	NewSubmissions    int32              `json:"new_submissions"`
+	NewMedias         int32              `json:"new_medias"`
+	NewWikis          int32              `json:"new_wikis"`
+	NewEntities       int32              `json:"new_entities"`
+	NewGeometries     int32              `json:"new_geometries"`
+	NewStorageBytes   int64              `json:"new_storage_bytes"`
+	CreatedAt         pgtype.Timestamptz `json:"created_at"`
+}
+
 type User struct {
 	ID           pgtype.UUID        `json:"id"`
 	Email        string             `json:"email"`