feat(neovim): experiment with ai agents (#237)

The following changes are introduced:

* Update `kickstart.nvim` to latest commit ([6ba24..3338d](6ba2408cdf..3338d39206))
* Add [`goose`](https://block.github.io/goose/) and [`goose.nvim`](https://block.github.io/goose/)
* Re-enable [`avante.nvim`](https://block.github.io/goose/)

Reviewed-on: #237
Co-authored-by: Joao P Dubas <joao.dubas+gitea@gmail.com>
Co-committed-by: Joao P Dubas <joao.dubas+gitea@gmail.com>

config/mise/config.toml

@@ -33,6 +33,7 @@
 "pipx:aider-chat" = { version = "0.83.1", uvx_args = "--python 3.12.10 --with google-generativeai" }
 "pipx:vectorcode" = { version = "0.6.6", uvx_args = "--python 3.13.3", extras = "mcp" }
 "ubi:Samyak2/toipe" = "0.5.0"
+"ubi:block/goose" = "1.0.24"
 "ubi:hlsxx/tukai" = "0.2.2"
 "ubi:jdx/usage" = "2.1.1"
 "ubi:max-niederman/ttyper" = "1.6.0"