feat(algorithms): add mask raster processing algorithm

eis_qgis_plugin/processing/algorithms/raster_processing/mask_raster.py

@@ -0,0 +1,43 @@
+from qgis.core import QgsProcessingParameterRasterDestination, QgsProcessingParameterRasterLayer
+
+from eis_qgis_plugin.processing.eis_processing_algorithm import EISProcessingAlgorithm
+
+
+class EISMaskRaster(EISProcessingAlgorithm):
+    def __init__(self) -> None:
+        super().__init__()
+
+        self._name = "mask_raster"
+        self._display_name = "Mask raster"
+        self._group = "Raster Processing"
+        self._group_id = "raster_processing"
+        self._short_help_string = """
+        Mask input raster using the nodata locations from base raster.
+
+        Only the first band of base raster is used to scan for nodata cells. Masking is performed to all \
+        bands of input raster.
+
+        If input rasters have mismatching grid properties, unifies rasters before masking (uses `nearest` \
+        resampling, unify separately first if you need control over the resampling method).
+        """
+
+    def initAlgorithm(self, config=None):
+        self.alg_parameters = ["input_raster", "base_raster", "output_raster"]
+
+        input_raster_param = QgsProcessingParameterRasterLayer(
+            name=self.alg_parameters[0], description="Input raster"
+        )
+        input_raster_param.setHelp("Input raster to be masked.")
+        self.addParameter(input_raster_param)
+
+        base_raster_param = QgsProcessingParameterRasterLayer(
+            name=self.alg_parameters[1], description="Base raster",
+        )
+        base_raster_param.setHelp("The base raster used to determine nodata locations.")
+        self.addParameter(base_raster_param)
+
+        output_raster_param = QgsProcessingParameterRasterDestination(
+            name=self.alg_parameters[2], description="Output raster"
+        )
+        output_raster_param.setHelp("The masked output raster.")
+        self.addParameter(output_raster_param)