Adds rudimentary video support

[mennoliefstingh]

Pull request type

• [ ] 🪳 Bugfix
• [ ] 👮🏻‍♂️ Security/dependency update
• [x] ✨ Feature (e.g., new script)
• [ ] 📝 Code style update (formatting, renaming)
• [ ] 🏗️ Refactoring (no functional changes, no API changes)
• [ ] 🔨 Build related changes (build scripts, build configs, etc.)
• [ ] 📘 Documentation

Pull request description

Adds video support to the Thijstool in a very rudimentary way by manually recreating the URL from the episode ID and placing that in the description. Adds three new env vars:

• ENABLE_VIDEO enables this (pre-alpha) functionality
• ENABLE_VIDEO_CHECK enables functionality that makes a get request to the video url, only adding/marking if a video exists there
• VIDEO_TITLE_SUFFIX is a suffix that's added to podcast titles iff ENABLE_VIDEO and ENABLE_VIDEO_CHECK and the video URL refers to an actual video.

[dylanvdbrink]

Is something blocking this PR to go through? Would really like to use this as well!