Update registry imports: gravity.py, edge.py, mode.py (replaces new_solvers.py)

neurogolf_solver/solvers/solver_registry.py

@@ -9,7 +9,9 @@ from .geometric import s_flip, s_rotate, s_shift, s_fixed_crop, s_gravity
 from .tiling import (s_tile, s_upscale, s_kronecker, s_nonuniform_scale, s_diagonal_tile,
                      s_mirror_h, s_mirror_v, s_quad_mirror, s_concat, s_concat_enhanced,
                      s_spatial_gather, s_varshape_spatial_gather)
-from .new_solvers import s_gravity_unrolled, s_edge_detect, s_mode_fill
+from .gravity import s_gravity_unrolled
+from .edge import s_edge_detect
+from .mode import s_mode_fill
 from .conv import solve_conv_fixed, solve_conv_variable, solve_conv_diffshape, solve_conv_var_diff
 from ..data_loader import get_exs, fixed_shapes
 from ..validators import validate