initialize with first MVP

lua/test-samurai/util.lua

@@ -0,0 +1,27 @@
+local M = {}
+
+function M.get_buf_lines(bufnr)
+  return vim.api.nvim_buf_get_lines(bufnr, 0, -1, false)
+end
+
+function M.get_buf_path(bufnr)
+  local name = vim.api.nvim_buf_get_name(bufnr)
+  if name == "" then
+    return nil
+  end
+  return name
+end
+
+function M.find_root(file, markers)
+  if not file or file == "" then
+    return vim.loop.cwd()
+  end
+  local dir = vim.fs.dirname(file)
+  local found = vim.fs.find(markers, { path = dir, upward = true })
+  if found and #found > 0 then
+    return vim.fs.dirname(found[1])
+  end
+  return dir
+end
+
+return M