feat(neovim): Markdown-oxide configured

- Makes the Obsidian-like markdown work in Neovim

common/.config/nvim/lsp/markdown_oxide.lua

@@ -0,0 +1,14 @@
+return {
+    cmd = { "markdown-oxide" },
+    filetypes = { "markdown" },
+    root_dir = function()
+        return vim.fn.getcwd()
+    end,
+    settings = {
+        workspace = {
+            didChangeWatchedFiles = {
+                dynamicRegistration = true,
+            },
+        },
+    },
+}