obsidian source for ddc.vim
https://github.com/vim-denops/denops.vim
https://github.com/Shougo/ddc.vim
https://github.com/BurntSushi/ripgrep
call ddc#custom#patch_filetype('markdown', #{
\ sources: [ 'obsidian_tag', 'obsidian_link' ],
\ sourcesParams: #{
\ obsidian_tag: #{ vault: expand('~/zettelkasten') },
\ obsidian_link: #{ vault: expand('~/zettelkasten') },
\ }
\ })