[Package Request] fish-lsp, systemd-lsp, astrojs-language-server

| LSP | Description | Upstream | AUR |
|---|---|---|---|
| `fish-lsp` | LSP implementation for the fish shell language 🐠 | [Source](https://github.com/ndonfris/fish-lsp) | [Package](https://aur.archlinux.org/packages/fish-lsp) |
| `systemd-lsp` | A language server implementation for systemd unit files made in rust 🦀 | [Source](https://github.com/JFryy/systemd-lsp) | [Package](https://aur.archlinux.org/packages/systemd-lsp) |
| `astrojs-language-server` | The Astro language server, powered by Volar. | [Source](https://github.com/withastro/language-tools) | [Package](https://aur.archlinux.org/packages/astrojs-language-server) |