feat: add custom avatar functionality (#248)

Co-authored-by: Dante Bradshaw <plansuperior@gmail.com>

migrations/000013.php

@@ -0,0 +1,25 @@
+<?php
+
+/**
+ * This migration script updates the avatar field of the user table to use the new avatar path.
+ */
+
+/** @noinspection PhpUndefinedVariableInspection */
+$sql = "SELECT avatar FROM user";
+$stmt = $db->prepare($sql);
+$result = $stmt->execute();
+$row = $result->fetchArray(SQLITE3_ASSOC);
+
+if ($row) {
+    $avatar = $row['avatar'];
+
+    if (strlen($avatar) < 2) {
+        $avatarFullPath = "images/avatars/" . $avatar . ".svg";
+        $sql = "UPDATE user SET avatar = :avatarFullPath";
+        $stmt = $db->prepare($sql);
+        $stmt->bindValue(':avatarFullPath', $avatarFullPath, SQLITE3_TEXT);
+        $stmt->execute();
+    }
+}
+
+?>