[Enhancement] Unified content and style of KCL error messages.

[Peefy]

Enhancement

• Singular/even numbers bug: singular/even numbers error in some diagnostics #768
  

takes 2 argument -> takes 2 arguments

• Show function type error message e.g. (int, int) -> int instead of function bug: the diagnostic of a lambda expression type error is incomplete #770

_func = lambda x: int, y: int -> int {
    x - y
}  # Ok
_func = lambda x: int, y: int -> str {
    str(x + y)
}  # Error: function (int, int) -> str can't be assigned to function (int, int) -> int

• Inconsistent error display between IDE and CLI Bug: Inconsistent error display between IDE and CLI, '__' is missing in CLI #776
  
  

• Keyword argument format error message enhancement Enhancement : Keyword argument format error message enhancement #775

a = "{ID}".format(2) # keyword argument not found -> keyword argument 'ID' not found

• Enhance value union conflict error message

• Error positions for undefined lambda parameters

• Positional argument error not found for schema

schema D[name: str]: # ''
    n: str = name

d = D() { # expected 1 positional argument, found 0
    n = ""
}

• Name not found in the schema expression

schema Person:
    image: str
    check:
        regex.match(image, "^[a-zA-Z]+:\d+\.\d+\.\d+$"), "image name should be like 'nginx:1.14.2'" # regex package is not importted