docs: 0.114.0 release notes, navigation restructure, new guides, deploy video, and cleanup (#2653)

- Add v0.114.0 release notes with highlights image and doc links
- Restructure docs navigation (Strategy group, Releases tab, navbar links)
- Update quickstart with deployment video and clearer instructions
- Add/rename guides (Custom Manager Agent, Custom LLM)
- Remove legacy concept/tool docs
- Add new images and tool docs
- Minor formatting and content improvements throughout

docs/quickstart.mdx

@@ -336,9 +336,22 @@ email_summarizer_task:
       - research_task
 ```
 
-## Deploying Your Project
+## Deploying Your Crew
 
-The easiest way to deploy your crew is through [CrewAI Enterprise](http://app.crewai.com), where you can deploy your crew in a few clicks.
+The easiest way to deploy your crew to production is through [CrewAI Enterprise](http://app.crewai.com).
+
+Watch this video tutorial for a step-by-step demonstration of deploying your crew to [CrewAI Enterprise](http://app.crewai.com) using the CLI.
+
+<iframe
+  width="100%"
+  height="400"
+  src="https://www.youtube.com/embed/3EqSV-CYDZA"
+  title="CrewAI Deployment Guide"
+  frameborder="0"
+  style={{ borderRadius: '10px' }}
+  allow="accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture"
+  allowfullscreen
+></iframe>
 
 <CardGroup cols={2}>
   <Card