add parinfer-rust pluging

Author: petervlk

lua/custom/plugins/parinfer.lua

@@ -0,0 +1,12 @@
+return {
+  'eraserhd/parinfer-rust',
+  build = 'cargo build --release',
+  init = function()
+    vim.g.parinfer_rust_enabled = 1
+    vim.g.parinfer_rust_mode = 'smart' -- Options: "indent", "paren", "smart"
+    vim.g.parinfer_rust_dim_parens = 1 -- Dim parens in Smart mode
+
+    -- Optional: Set filetypes where parinfer should be active
+    vim.g.parinfer_rust_filetypes = { 'clojure', 'lisp', 'scheme', 'racket' }
+  end,
+}