Make data type dynamic

The data type is currently hard-coded as `float32` : https://github.com/developmentseed/numeric-data-layer/blob/main/src/layers/NumericDataLayer/index.tsx#L16 , shader is written assuming that the data type is float 32. https://github.com/developmentseed/numeric-data-layer/blob/main/src/layers/NumericDataPaintLayer/index.tsx#L61

Start by reading the data type handling in src/layers/NumericDataLayer/index.tsx around line 16 and the shader assumptions in src/layers/NumericDataPaintLayer/index.tsx around line 61. Trace how the type reaches the paint layer, then verify that the selected data type is respected instead of assuming float32.

Vom Indexierungsmodell aus dem Issue-Text verfasst.