fix(filetype): only pass first 100 and last lines to contents check

sufficient for current content checks and avoids performance issues for
buffers with a large number of lines

fixes #19817

Problem:    Astro files are not detected.
Solution:   Add a pattern to match Astro files. (Emilia Zapata, closes vim/vim#10904)
https://github.com/vim/vim/commit/6a76e84f555da6d9ee57db80143e1e5eb85535ff

Problem:    Metafun files are not recogized.
Solution:   Add filetype detection patterns.
https://github.com/vim/vim/commit/9032b9ceb6073288d75386dbcbd9d1982fa24080

Problem:    Quarto files are not recognized.
Solution:   Recognize quarto files by the extension. (Jonas Strittmatter,
            closes vim/vim#10880)
https://github.com/vim/vim/commit/3a9687fb2749cb3da6e3bbf60cb9eaa81f7889ae

docs: use strings instead of tables in vim.filetype.matchregex doc

Problem:    Sway config files are recognized as i3config.
Solution:   Recognize swayconfig separately. (James Eapen, closes vim/vim#10672)
https://github.com/vim/vim/commit/7abd1c6d8e777bde1700633bafc1a40be9e9c1aa

Problem:    Using "terraform" filetype for .tfvars file is bad.
Solution:   use "terraform-vars", so that different completion and other
            mechanisms can be used. (Radek Simko, closes vim/vim#10755)
https://github.com/vim/vim/commit/15b87b6610bfce0c6296bbbad019c944f88a74ca

Problem:    Too many files recognized as bsdl.
Solution:   Use pattern "*.bsd" instead of "*bsd". (Martin Tournoij,
            closes vim/vim#10783)
https://github.com/vim/vim/commit/1b67f07f7626b87d9ce3e16815970988983a2ddc

* Problem

Quotes are special in doxygen, and should be escaped. *Sometimes* they
cause doc generation issues. Like in #17785

* Solution

Replace double quotes with single quotes

vim-patch:9.0.0055: bitbake files are not detected

Problem:    Bitbake files are not detected.
Solution:   Add bitbake filetype detection by file name and contents. (Gregory
            Anders, closes vim/vim#10697)
https://github.com/vim/vim/commit/fa49eb482729a5fe7da9c9a5ed8d14f68afa55c7