improve support to meili

http-api/tests/test_meili.py

@@ -0,0 +1,11 @@
+import meili
+
+
+def test_parse():
+    s = 'payment_date >= 2025-07-01 AND status = PAID'
+    r = meili.parse(s)
+
+    assert r == [
+        {'attr': 'payment_date', 'op': '>=', 'value': '2025-07-01'},
+        {'attr': 'status', 'op': '=', 'value': 'PAID'},
+    ]