docs: restructure documentation

docs/manual/configuring/languages.md

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+# Language Support {#ch-languages}
+
+Language specific support means there is a combination of language specific plugins, `treesitter` support, `nvim-lspconfig` language servers, and `null-ls`
+integration. This gets you capabilities ranging from autocompletion to formatting to diagnostics. The following languages have sections under the `vim.languages`
+attribute.
+
+- Rust: [vim.languages.rust.enable](#opt-vim.languages.rust.enable)
+- Nix: [vim.languages.nix.enable](#opt-vim.languages.nix.enable)
+- SQL: [vim.languages.sql.enable](#opt-vim.languages.sql.enable)
+- C/C++: [vim.languages.clang.enable](#opt-vim.languages.clang.enable)
+- Typescript/Javascript: [vim.languages.ts.enable](#opt-vim.languages.ts.enable)
+- Python: [vim.languages.python.enable](#opt-vim.languages.python.enable):
+- Zig: [vim.languages.zig.enable](#opt-vim.languages.zig.enable)
+- Markdown: [vim.languages.markdown.enable](#opt-vim.languages.markdown.enable)
+- HTML: [vim.languages.html.enable](#opt-vim.languages.html.enable)
+- Dart: [vim.languages.dart.enable](#opt-vim.languages.dart.enable)
+- Go: [vim.languages.go.enable](#opt-vim.languages.go.enable)
+- Lua: [vim.languages.lua.enable](#opt-vim.languages.lua.enable)
+- PHP: [vim.languages.php.enable](#opt-vim.languages.php.enable)
+
+Adding support for more languages, and improving support for existing ones are great places
+where you can contribute with a PR.
+
+```{=include=} sections
+languages/lsp.md
+```