Track new analytics metrics in backend (#5895)

* Allow filtering by project IDs in analytics route

* Download meta info in header

* add recursion limit

* Track playtime country

* fix clickhouse migrations

apps/labrinth/src/models/v3/analytics.rs

@@ -23,6 +23,23 @@ pub struct Download {
     pub country: String,
     pub user_agent: String,
     pub headers: Vec<(String, String)>,
+
+    // added retroactively - may be missing
+    pub reason: Option<DownloadReason>,
+    pub game_version: Option<String>,
+    pub loader: Option<String>,
+}
+
+/// Why a project was downloaded.
+#[derive(Debug, Clone, Copy, PartialEq, Eq, Hash, Serialize, Deserialize)]
+pub enum DownloadReason {
+    /// Project was downloaded directly by the user.
+    Standalone,
+    /// Project was downloaded as a dependency, possibly transitive, of another
+    /// project.
+    Dependency,
+    /// Project was downloaded as part of a modpack.
+    Modpack,
 }
 
 #[derive(Debug, Row, Serialize, Deserialize, Clone, Eq, PartialEq, Hash)]
@@ -77,6 +94,9 @@ pub struct Playtime {
     pub game_version: String,
     /// Parent modpack this playtime was recorded in
     pub parent: u64,
+
+    // added retroactively - may be missing
+    pub country: Option<String>,
 }
 
 #[derive(Row, Serialize, Deserialize, Clone, Debug, Eq, PartialEq, Hash)]