Emit fix-its for Return from initializer without initializing all stored properties

[iMostfa]

Motivation

when adding new declarations to any data type (class, struct, actor)
it will be nice if the compiler suggest fix-its to init the newly added declarations

Proposed solution

it will be nice if the compiler provides two fix-its

1. appearing on the init that if applied, will add the new missing parameters
2. appearing on the closing brace of init, to add self.foo=foo

struct Foo {
    let name: String
    let age: Int  //<- newly added variable

    init(name: String) {
        self.name = name
    }
}

the two fix-its should be:

[
 {
  "file": "/Users/mostafa.essam/Desktop/file2.swift",
  "offset": 106,
  "text": "\nself.age = age\n"
 },
 {
  "file": "/Users/mostafa.essam/Desktop/file2.swift",
  "offset": 73,
  "text": ",age: Int"
 }
]

Alternatives considered

No response

Additional information

No response

[iMostfa]

PR opened

#80945