A few missing exports in the `grid` dialect

[cduck]

Some kernels defined in https://github.com/QuEraComputing/bloqade-geometry/blob/main/src/bloqade/geometry/dialects/grid/_interface.py are not exported in https://github.com/QuEraComputing/bloqade-geometry/blob/main/src/bloqade/geometry/dialects/grid/__init__.py. Please export all of them.

Version: bloqade-geometry==0.5.1

Expected this to work:

from bloqade.geometry.dialects import grid

# In a kernel:
new_grid = grid.shift_subgrid_x(old_grid, x, y);

But I am forced to use this workaround:

# In a kernel:
new_grid = grid._interface.shift_subgrid_x(old_grid, x, y);