feat: Updates lazyvim configuration, adds some configuration files.

nvim/lazynvim/lua/plugins/lint.lua

@@ -0,0 +1,12 @@
+return {
+  {
+    "mfussenegger/nvim-lint",
+    opts = {
+      linters = {
+        markdownlint = {
+          args = { "--config", "~/.markdownlint.jsonc", "--" },
+        },
+      },
+    },
+  },
+}