[Improvement]: Provide the from clause snippet when a collection is associated

[nipunayf]

Description

Provide the from clause snippet when the user writes collectionVariable.from as well, similar to how the LS provides the foreach snippet for such cases.

Describe your problem(s)

The foreach snippet produces the following code.

public function main() {
    int[] arr = [];

    foreach int item in arr {
        
    }
}

Similarly, we can provide a such snippet when the user type arr.from as well.

Describe your solution(s)

The respective completion item should be provided for the following cursor position.

public function main() {
    int[] arr = [];

    arr.from<CURSOR>
}

Similar to how the LS provides the form clause snippet for the from keyword, it can produce the same snippet with a collection attached to it. For instance, arr.from can be converted to from int item in arr.

Related area

-> Compilation

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