Mitama.Result version 5.0.0

Enhancements

• rename

old	new
Result	basic_result
Ok	success
Err	failure

• Improve formatting output

New features

• in-place constructor for basic_result
• immutability (result and mut_result)
• basic_result support reference type
• new APIs
  • as_ref
  • as_mut
  • indirect
• dangling