home: vim: add basic LSP configuration

Trying it out with `pyright` for now.

home/vim/plugin/settings/lspconfig.vim

@@ -0,0 +1,11 @@
+lua << EOF
+local lsp = require("lspconfig")
+local utils = require("ambroisie.utils")
+
+-- Python
+if utils.is_executable("pyright") then
+    lsp.pyright.setup({
+        on_attach = utils.on_attach,
+    })
+end
+EOF