[feature request] need @copyparam

[zhangzq]

In many cases, the functions share same parameters with same doc on them. @copyparam will be useful in these cases.

## @brief This is a function. 
# @param a This is parameter.
def function1(a):
    pass

## @brief This is another function.
# @param a @copyparam function1 a
def function2(a):
    pass

[albert-github]

There are already a number of requests for this feature (even one from yourself).
Setting issue to duplicate.