Add former agency members and former agency members

[satsuki-sama]

I suggest the following additions:

1. Add new VShojo members K9KURO and Matara Kan to VShojo
2. Move former VShojo member Amemiya Nazuna from VShojo to Others
3. Add former VShojo members Nyatasha Nyanners, Silvervale, and Veibae to Others
4. Add Dokibird to Others