[Video] Adding videos to library (#26945)

* Added Tunnel videos 1 & 2

* Added LoR video 2

Author: dcpena

src/content/stream/life-of-a-request-2/index.yaml

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+---
+id: 118647d8259c8d0121db228d16c0aa54
+url: life-of-a-request-2
+title: The Fast Lane - Caching and Smart Routing
+description: After your request hits Cloudflare's secure network at the nearest data center where it’s checked for security threats with a clean bill of health, it’s time to get it to its destination at lightning speed.
+products:
+  - fundamentals
+pcx_content_type: video
+thumbnail:
+  timestamp: 1s

src/content/stream/the-online-address-book/index.yaml

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+---
+id: cb3498b26b1b58709dee5f025550cb1e
+url: the-online-address-book
+title: The Online Address Book
+description: This video focuses on the first prerequisite for using a tunnel, a domain name. It uses the metaphor of an online address book to explain DNS and how Cloudflare manages your domain.
+pcx_content_type: video
+products:
+  - cloudflare-one
+thumbnail:
+  url: https://pub-d9bf66e086fb4b639107aa52105b49dd.r2.dev/tunnel%201_%20what%20is%20cloudflare%20tunnel.png

src/content/stream/what-is-cf-tunnel/index.yaml

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+---
+id: 4fa0fe257187f18929c07754a4a4df09
+url: what-is-cf-tunnel
+title: What is Cloudflare Tunnel?
+description: Learn how Cloudflare Tunnel is like a private, secure pathway from your computer to the Internet, so you don't have to leave the front door (your network) wide open.
+pcx_content_type: video
+products:
+  - cloudflare-one
+thumbnail:
+  url: https://pub-d9bf66e086fb4b639107aa52105b49dd.r2.dev/tunnel%201_%20what%20is%20cloudflare%20tunnel.png