Neovim: Add treesitter-context plugin

nvim/lua/custom/plugins/nvim-treesitter-context.lua

@@ -0,0 +1,11 @@
+-- Display context that has scrolled off the top of the screen.
+-- For example, signature of the current function, or if-case.
+-- https://github.com/nvim-treesitter/nvim-treesitter-context
+return {
+  {
+    'nvim-treesitter/nvim-treesitter-context',
+    opts = {
+      max_lines = 5,
+    },
+  },
+}