Adding experimental rule for detecting first line blank in method block

[sowmyav24]

This experimental rule addresses issue Issue #440
In addition to checking for first line blank in a method block, it will check for any first blank line in code blocks of the method.Please let me know if the subsequent code blocks in the method need to be ignored from this check.

Due to this new rule, there were violations reported in the code. Have fixed them also.

This is same as PR #461.

[shashachu]

In addition to checking for first line blank in a method block, it will check for any first blank line in code blocks of the method

Does this mean that

fun bar() {
    if (something) {

        foo()
    }
}

will not change during formatting, but

fun bar() {

    if (something) {

        foo()
    }
}

will format to

fun bar() {
    if (something) {
        foo()
    }
}

?

If so, that inconsistency seems unexpected.

[sowmyav24]

fun bar() {
    if (something) {

        foo()
    }
}

would also format to

fun bar() {
    if (something) {
        foo()
    }
}

Added a test for this scenario also

[shashachu]

looks good to me- thanks!