Pointing lazy.nvim to a Pull Request

As I did an update earlier on my Neovim plugins, I noticed a breaking change from codecompanion.nvim hadn't yet been addressed upstream with mcphub.nvim, but fortunately a couple of options were contributed by the community. Until the PRs are merged, I wanted a way to pull the changes into my local setup with lazy.nvim, so I could continue using MCPHub. As I'd posted about on one of the PRs, we can take advantage of using the Git refs for PRs, and then tell Lazy to use that branch. This allow...