feat: add share options

[Jh123x]

Changelog:

1. Add telegram sharing option
2. Add line sharing option

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[jpanther]

I'm happy to add this functionality however this PR needs a couple of changes:

• Change the Line SVG to use the icon from FontAwesome (and modify the asset to match the existing SVGs in the theme in terms of structure and adding fill="currentColor" to the path so it is themed correctly)
• Add the required i18n strings for sharing.telegram and sharing.line (including placeholders in all the languages other than English, as required)

[jpanther]

Wow, you really went above and beyond with the i18n strings. I was only expecting blank commented out placeholders but you've managed to actually translate them all! I'm happy to merge this one in. I'll get to it later today.