feat: new config with everything manually installed

lsp/astro.lua

@@ -0,0 +1,5 @@
+return {
+    cmd = { 'astro-ls', '--stdio' },
+    filetypes = { 'astro' },
+    root_markers = { '.git', 'astro.config.mjs', 'astro.config.js', 'astro.config.ts' },
+}