Improve the output code generated from Ballerina bindgen tool

[NipunaRanasinghe]

Description

There seems to be some cases where the generated ballerina binding code can be improved using more optimized and readable syntax.

As an example, refer to the below code generated by the existing tool, that can be improved using query expressions.

public function f2(Foo[] arg0) returns Foo[]|error {
        handle externalObj = Foo_objArrayParamReturns(self.jObj, check jarrays:toHandle(arg0, "Foo"));
        Foo[] newObj = [];
        handle[] anyObj = <handle[]>check jarrays:fromHandle(externalObj, "handle");
        int count = anyObj.length();
        foreach int i in 0 ... count - 1 {
            Foo element = new (anyObj[i]);
            newObj[i] = element;
        }
        return newObj;
}

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Related area

-> Compilation

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