* reformat Lua runtime to make lint CI pass
* reduce max line length to 100

`nvim_get_option_value` and `nvim_set_option_value` better handle
unsetting local options. For instance, this is currently not possible:

    vim.bo.tagfunc = nil

This does not work because 'tagfunc' is marked as "local to buffer" and
does not have a fallback global option. However, using :setlocal *does*
work as expected

    :setlocal tagfunc=

`nvim_set_option_value` behaves more like :set and :setlocal (by
design), so using these as the underlying API functions beneath vim.bo
and vim.wo makes those two tables act more like :setlocal. Note that
vim.o *already* uses `nvim_set_option_value` under the hood, so that
vim.o behaves like :set.

This call alone is responible of 40 000 000 out of 80 000 000
individual alloc/free calls in the test suite.

Co-authored-by: Brede Yabo Sherling Kristensen <bredeyabo@hotmail.com>
Co-authored-by: zeertzjq <zeertzjq@outlook.com>
Co-authored-by: István Donkó <istvan.donko@gmail.com>
Co-authored-by: Julian Berman <Julian@GrayVines.com>
Co-authored-by: bryant <bryant@users.noreply.github.com>
Co-authored-by: Michael Lingelbach <m.j.lbach@gmail.com>
Co-authored-by: nlueb <9465658+nlueb@users.noreply.github.com>
Co-authored-by: Leonhard Saam <leonhard.saam@yahoo.com>
Co-authored-by: Jesse Wertheim <jaawerth@gmail.com>
Co-authored-by: dm1try <me@dmitry.it>
Co-authored-by: Jakub Łuczyński <doubleloop@o2.pl>
Co-authored-by: Louis Lebrault <louis.lebrault@gmail.com>
Co-authored-by: Brede Yabo Sherling Kristensen <bredeyabo@hotmail.com>
Co-authored-by: zeertzjq <zeertzjq@outlook.com>
Co-authored-by: István Donkó <istvan.donko@gmail.com>
Co-authored-by: Julian Berman <Julian@GrayVines.com>
Co-authored-by: bryant <bryant@users.noreply.github.com>
Co-authored-by: Michael Lingelbach <m.j.lbach@gmail.com>
Co-authored-by: nlueb <9465658+nlueb@users.noreply.github.com>
Co-authored-by: Leonhard Saam <leonhard.saam@yahoo.com>
Co-authored-by: Jesse Wertheim <jaawerth@gmail.com>
Co-authored-by: dm1try <me@dmitry.it>
Co-authored-by: Jakub Łuczyński <doubleloop@o2.pl>
Co-authored-by: Louis Lebrault <louis.lebrault@gmail.com>

Options formatted as a list of comma-separated key-value pairs may have
values that contain leading and trailing whitespace characters. For
example, the `listchars` option has a default value of
`"tab:> ,trail:-,nbsp:+"`. When converting this value to a lua table,
leading and trailing whitespace should not be trimmed.

Co-authored-by: Robert Hrusecky <robert.hrusecky@utexas.edu>