refactor(types): simplify conversion from Article to InlineResult

[AndrielFR]

Fixes:

1. the trait bound `grammers_client::grammers_tl_types::enums::InputBotInlineResult: From<grammers_client::types::inline::query::Article>` is not satisfied
   the following other types implement trait `From<T>`:
     `grammers_client::grammers_tl_types::enums::InputBotInlineResult` implements `From<InputBotInlineResultDocument>`
     `grammers_client::grammers_tl_types::enums::InputBotInlineResult` implements `From<InputBotInlineResultGame>`
     `grammers_client::grammers_tl_types::enums::InputBotInlineResult` implements `From<InputBotInlineResultPhoto>`
     `grammers_client::grammers_tl_types::enums::InputBotInlineResult` implements `From<grammers_client::grammers_tl_types::types::InputBotInlineResult>`
     `grammers_client::grammers_tl_types::enums::InputBotInlineResult` implements `From<grammers_client::types::inline::query::InlineResult>`
   required for `grammers_client::types::inline::query::Article` to implement `Into<grammers_client::grammers_tl_types::enums::InputBotInlineResult>` [E0277]