docs: Add MCP registry browser to the community-projects.md page (#889)

<!-- Provide a brief summary of your changes -->

## Motivation and Context

Added a fully client-side browser for MCP registry APIs to the
`community-projects.md` documentation page:
https://vemonet.github.io/mcp-registry

I built it because I was missing a way to easily configure a server and
export the configuration (existing browsers I have found show the
available parameters, but you still need to manually build the JSON):

- It shows a user friendly form that enables to configure MCP servers
based on their registry entry, making it easier to understand and fill
the configuration required for deploying a server (instead of having to
read through JSON, and manually build another JSON). Then users can
either copy the generated config or install in client with custom URL
handler like VSCode/cursor in 1 click
- It is a thin client UI layer over the existing registry API, it does
not offer additional classification, complex filtering, or semantic
search (we don't use an additional server or database). So it is more of
a tool to make it user friendly to directly access a raw registry
content and inspects available servers, than an opinionated browser with
advanced search capabilities


## How Has This Been Tested?
<!-- Have you tested this in a real application? Which scenarios were
tested? -->

## Breaking Changes
<!-- Will users need to update their code or configurations? -->

## Types of changes
<!-- What types of changes does your code introduce? Put an `x` in all
the boxes that apply: -->
- [ ] Bug fix (non-breaking change which fixes an issue)
- [ ] New feature (non-breaking change which adds functionality)
- [ ] Breaking change (fix or feature that would cause existing
functionality to change)
- [x] Documentation update

## Checklist
<!-- Go over all the following points, and put an `x` in all the boxes
that apply. -->
- [x] I have read the [MCP
Documentation](https://modelcontextprotocol.io)
- [x] My code follows the repository's style guidelines
- [ ] New and existing tests pass locally
- [ ] I have added appropriate error handling
- [x] I have added or updated documentation as needed

## Additional context
<!-- Add any other context, implementation notes, or design decisions
-->

Author: vemonet

docs/community-projects.md

@@ -11,13 +11,14 @@ Browse the official MCP Registry in your browser!
 - [MCP Bench](https://mcpbench.ai/)🔎 - Explore the MCP registry with richer filters, community stars, and LLM-generated classification tags.
 - [MCP Registry Database](https://lite.datasette.io/?url=https%3A%2F%2Fraw.githubusercontent.com%2Frosmur%2Fofficial-mcp-registry-database%2Fmain%2Fofficial_mcp_registry.db#/official_mcp_registry/servers)🔎 - A minimal, web browsable, live database of the official MCP Registry [source code](https://github.com/rosmur/official-mcp-registry-database).
 - [TeamSpark AI Server Registry](https://teamsparkai.github.io/ToolCatalog/registry)🔎 - Browse and discover servers from the official MCP Registry ([source code](https://github.com/TeamSparkAI/ToolCatalog)).
+- [MCP Registry UI](https://vemonet.github.io/mcp-registry)🔎 - A fully client‑side app to search, filter, configure, and install servers from MCP Registry APIs ([source code](https://github.com/vemonet/mcp-registry)).
 
 ### MCP Registry Clients
 
 - [REST API](modelcontextprotocol-io/registry-aggregators.mdx) - HTTP API
 - [go-mcp-registry](https://github.com/leefowlercu/go-mcp-registry) - Go SDK
 - [mcp-registry-spec-sdk](https://www.npmjs.com/package/mcp-registry-spec-sdk) - TypeScript client for the MCP Registry
-- [LangChain4j MCP Registry Java client](https://docs.langchain4j.dev/tutorials/mcp/#mcp-registry-client) - Java API 
+- [LangChain4j MCP Registry Java client](https://docs.langchain4j.dev/tutorials/mcp/#mcp-registry-client) - Java API
 
 ### Other