fix(highlight): allow override (#201)

update envvar parsing from cmdline

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

lua/avante/types.lua

@@ -1,26 +0,0 @@
----@meta
-
----@class AvanteComp
----@field winid integer | nil
----@field bufnr integer | nil
-local AvanteComp = {}
-
----@return nil
-function AvanteComp:mount() end
-
----@return nil
-function AvanteComp:unmount() end
-
----@param event string | string[]
----@param handler string | function
----@param options? table<"'once'" | "'nested'", boolean>
----@return nil
-function AvanteComp:on(event, handler, options) end
-
--- set keymap for this split
----@param mode string check `:h :map-modes`
----@param key string|string[] key for the mapping
----@param handler string | fun(): nil handler for the mapping
----@param opts? table<"'expr'"|"'noremap'"|"'nowait'"|"'remap'"|"'script'"|"'silent'"|"'unique'", boolean>
----@return nil
-function AvanteComp:map(mode, key, handler, opts, ___force___) end