queries: add folds

Closes #6

dev/nvim-ts.nix

@@ -38,6 +38,16 @@ let
       },
     })
 
+    -- Fold level
+    vim.opt.foldlevel = 99
+    vim.opt.foldlevelstart = 99
+    vim.opt.foldminlines = 1
+    vim.opt.foldnestmax = 5
+    vim.opt.foldmethod = "expr"
+    vim.cmd([[
+      set foldexpr=nvim_treesitter#foldexpr()
+    ]])
+
     vim.g.catppuccin_flavour = "frappe"
     require("catppuccin").setup()
     vim.cmd([[colorscheme catppuccin]])

queries/folds.scm

@@ -0,0 +1,5 @@
+[
+  (block)
+  (class_block)
+  (text_block)
+] @fold

queries/locals.scm

@@ -0,0 +1,6 @@
+; Scope
+[
+  (block)
+  (class_block)
+  (text_block)
+] @scope