feat: tokenizers (#407)

* feat: autobuild tiktoken lib and schenanigans

Signed-off-by: Aaron Pham <contact@aarnphm.xyz>

* chore: revert readme changes

Signed-off-by: Aaron Pham <contact@aarnphm.xyz>

* fix(build): windows

Signed-off-by: Hanchin Hsieh <me@yuchanns.xyz>

* chore(plugin): early load commands and base setup

Signed-off-by: Aaron Pham <contact@aarnphm.xyz>

* fix(build): make sync

Signed-off-by: Aaron Pham <contact@aarnphm.xyz>

* feat: rust go vroom vroom

Signed-off-by: Aaron Pham <contact@aarnphm.xyz>

* feat: scuffed afaf implementation binding go brrrr

Signed-off-by: Aaron Pham <contact@aarnphm.xyz>

* chore: remove dups

Signed-off-by: Aaron Pham <contact@aarnphm.xyz>

* fix(tokens): calculate whether we should do prompt_caching (fixes #416)

Signed-off-by: Aaron Pham <contact@aarnphm.xyz>

* chore: ignore lockfiles

Signed-off-by: Aaron Pham <contact@aarnphm.xyz>

* Update README.md

* Update crates/avante-tokenizers/README.md

* chore: remove unused

Signed-off-by: Aaron Pham <contact@aarnphm.xyz>

* chore: remove auto build

Signed-off-by: Aaron Pham <contact@aarnphm.xyz>

---------

Signed-off-by: Aaron Pham <contact@aarnphm.xyz>
Signed-off-by: Hanchin Hsieh <me@yuchanns.xyz>
Co-authored-by: yuchanns <me@yuchanns.xyz>

lua/avante/providers/copilot.lua

@@ -127,6 +127,7 @@ end
 M.state = nil
 
 M.api_key_name = P.AVANTE_INTERNAL_KEY
+M.tokenizer_id = "gpt-4o"
 
 M.parse_message = function(opts)
   return {
@@ -166,6 +167,7 @@ M.setup = function()
     M.state = { github_token = nil, oauth_token = H.get_oauth_token() }
     H.refresh_token()
   end
+  require("avante.tokenizers").setup(M.tokenizer_id)
   vim.g.avante_login = true
 end