Removed "label" properties which no longer have any function.
Labels are still used as layer names and as identifiers for sending
behaviors between sides of a split keyboard, so those have been left
alone for now.
* Add two new compatibles for macros that
take one or two parameters when bound in
a keymap.
* Use `¯o_param_1to1`, `¯o_param_1to2`, `¯o_param_2to1`,
and `¯o_param_2to2` control entries in the bindings for the macro
to have the next binding entry have it's values substituted.
Co-authored-by: Cem Aksoylar <caksoylar@users.noreply.github.com>