Feature: include page icons

[joapuiib]

These changes allow including the page icon in the page title of an alias.

mkdocs.yml

plugins:
  - alias:
      use_page_icon: true

page.md

---
alias: page
title: Page title
icon: material/emoticon-happy 
---

example.md

[[page]]

Will render as:

[:material-emoticon-happy: Page title](page.md)

[EddyLuten]

This looks like a great addition! I'll review the PR and test it out myself once I have some time next week or the week after. Thanks for the contribution!

[EddyLuten]

LGTM 🚀

Thanks for the contribution!