nvim: move rustaceanvim to lsp.rust

.config/nvim/lua/lsp/rust.lua

@@ -0,0 +1,19 @@
+local mylsp = require("lsp")
+local border = mylsp.border
+local on_attach = mylsp.on_attach
+
+vim.g.rustaceanvim = {
+    server = {
+        on_attach = on_attach,
+        settings = {
+            ["rust-analyzer"] = { files = { excludeDirs = { ".direnv/" } } },
+        },
+    },
+    tools = {
+        hover = {
+            border = border,
+            stylize_markdown = true,
+        },
+        log = { level = vim.log.levels.OFF },
+    },
+}