* added via keymap
* replaced PRODUCT_ID 0x1157 with PRODUCT_ID 0x2157
replaced product id to distinguish rev2 from rev1.
bakingpy gave me permission through discord chat.
* Update keyboards/keebio/viterbi/keymaps/via/keymap.c
* Update keyboards/keebio/viterbi/keymaps/via/rules.mk
* made a simplier keymap.c for via folder
Based from the default keymap, removed unnecessary codes.
