Add ks.DataFrame.from_dict

[itholic]

This PR proposes ks.DataFrame.from_dict.

Basically it just reuse the DataFrame constructor.

>>> data = {'col_1': [3, 2, 1, 0], 'col_2': ['a', 'b', 'c', 'd']}
>>> ks.DataFrame.from_dict(data)
   col_1 col_2
0      3     a
1      2     b
2      1     c
3      0     d

[itholic]

Not sure if we should implemented parameter orient since It seems can easily occur the overhead.

>>> data = {'col_1': [3, 2, 1, 0], 'col_2': ['a', 'b', 'c', 'd']}
>>> pd.DataFrame.from_dict(data, orient="index")
       0  1  2  3
col_1  3  2  1  0
col_2  a  b  c  d

[ueshin]

Thanks! merging.