add rwkv encoder

aky15

2023-10-20 ab653d3871f72f7f6cd1ac3126b3df722f4c7943

1
2
3
4
5
6
7
8
p m    p.m.
pm    p.m.
p.m.
p.m    p.m.
am    a.m.
a.m.
a.m    a.m.
a m    a.m.