feat(rp5): add rp5 api

tests/test_rp5.py

@@ -0,0 +1,27 @@
+import datetime
+
+import pytest
+
+from gallery.painting.rp5.api import RP5WeatherApi
+from tests.common.mock import create_mock_api
+from tests.data.rp5 import RP5_MOCK_SOURCE
+
+
+@pytest.fixture(name="rp5_api", scope="module")
+def rp5_api_fixture() -> RP5WeatherApi:
+    return create_mock_api(RP5WeatherApi, RP5_MOCK_SOURCE)
+
+
+async def test_search(rp5_api: RP5WeatherApi):
+    result = await rp5_api.find_locations("test")
+    assert len(result) == 3
+
+
+async def test_day(rp5_api: RP5WeatherApi):
+    result = await rp5_api.get_day("test", datetime.date(2026, 9, 2))
+    assert len(result.values) == 4
+
+
+async def test_days(rp5_api: RP5WeatherApi):
+    result = await rp5_api.get_days("test", 10)
+    assert len(result.values) == 7