add highly experimental wrapper for findmfpy

src/depiction/spectrum/peak_picking/findmf_peak_picker.py

@@ -0,0 +1,33 @@
+# TODO extremely experimental, not part of pyproject.toml dependencies etc,
+#   usage not yet recommended!
+from __future__ import annotations
+
+from dataclasses import dataclass
+
+import numpy as np
+from findmfpy.api import pick_peaks as _pick_peaks
+from numpy.typing import NDArray
+
+
+@dataclass
+class FindMFPeakpicker:
+    resolution: float = 10000.0
+    width: float = 2.0
+    int_width: float = 2.0
+    int_threshold: float = 10.0
+    area: bool = True
+    max_peaks: int = 0
+
+    def pick_peaks(
+        self, mz_arr: NDArray[np.float64], int_arr: NDArray[np.float64]
+    ) -> tuple[NDArray[np.float64], NDArray[np.float64]]:
+        return _pick_peaks(
+            mz_arr,
+            int_arr,
+            resolution=self.resolution,
+            width=self.width,
+            int_width=self.int_width,
+            int_threshold=self.int_threshold,
+            area=self.area,
+            max_peaks=self.max_peaks,
+        )