feat: add buffer system

lua/chai/buffers/test.lua

@@ -0,0 +1,14 @@
+local M = {}
+
+function M.init(vim_buffer)
+    vim.api.nvim_buf_set_lines(vim_buffer, 0, -1, false, { "press q to exit" })
+
+    vim.keymap.set({ "n", "x" }, "q", function()
+        vim.api.nvim_buf_delete(vim_buffer, { force = true })
+    end, { buffer = vim_buffer })
+
+    vim.bo[vim_buffer].modifiable = false
+    vim.bo[vim_buffer].modified = false
+end
+
+return M