Allow/document to jump to beginning/end of functions

Is your feature request related to a problem? Please describe.
One of the most useful motions for me is being able to jump to the beginning/end of a function. Unfortunately, using neovim's native ]m and ]M doesn't work for every language/file (https://neovim.io/doc/user/motion.html#%5Bm), as it doesn't uses treesitter.

Describe the solution you'd like
I would like a solution that lets me jump to beginning/end of function/class using treesitter's objects.
If this is already supported by the plugin, I would like it to be listed in the README examples, as I don't know how to make it behave like that.
I'm looking for something that overrides ]m and ]M using treesitter's objects.

Describe alternatives you've considered
The keymaps for ["af"] = "@function.outer", ["if"] = "@function.inner", are almost a perfect match of what I'm looking for, so I try to use them whenever possible. I would like something that can replace the ]m [m [M ]M motions though.

Additional context
I'm a bit new to treesitter, so if this doesn't sound like a reasonable request, let me know.

Start with the README examples and the existing textobjects keymap documentation, then compare Neovim's native [m, ]m, [M, and ]M motions with the @function.outer and @function.inner mappings mentioned in the issue. Done means the requested function/class boundary motions are supported or clearly documented, with behavior verified across the relevant Tree-sitter objects.