feat: automatic db creation and migration

backend-php/admin_api.php

@@ -13,7 +13,7 @@ function db()
 };
 
 
-function relativePathToUrl($rel)
+function relativePathToUrl(string $rel)
 {
     $parts = explode('/', dirname($_SERVER['SCRIPT_NAME']) . '/' . $rel);
     $norm = [];
@@ -37,7 +37,7 @@ function FastDBReq(PDO $db, string $sql, array $params = []): array
     }
 }
 
-function Login($req)
+function Login(mixed $req)
 {
     return isset($req->data['pass']) && $req->data['pass'] == ADMIN_PASS;
 }
@@ -46,7 +46,7 @@ CreateApi(function ($api) {
     $api->on('/', 'GET', function ($req) {
         return 'hi';
     });
-    $api->on('/phpliteadmin', 'GET', function ($req) {
+    $api->on('/phpliteadmin', 'GET', function () {
         header('Location:  ./adm/phpliteadmin.php');
         return "";
     });