v0.24.0 Helper context & message entities

Overview

• Added context to long polling & webhook helpers
• Added telego.WithLongPollingContext and telego.WithWebhookContext options
• Set message entity length to its full length, not trimming it

What's Changed

• Bump github.com/valyala/fasthttp from 1.46.0 to 1.47.0 by @dependabot in #101

Full Changelog: v0.23.0...v0.24.0