warn user to run codeflash init if config not found (#882)

Author: KRRT7

codeflash/code_utils/config_parser.py

@@ -100,7 +100,7 @@ def parse_config_file(
  try:
  tool = data["tool"]
  assert isinstance(tool, dict)
- config = tool.get("codeflash", {})
+ config = tool["codeflash"]
  except tomlkit.exceptions.NonExistentKey as e:
  if lsp_mode:
  # don't fail in lsp mode if codeflash config is not found.