Add zimfw as alternative plugin manager (#525)

I also added the text "See Below" for alternatives to oh-my-zsh and starship. I didn't think that warranted a separate PR.

Reviewed-on: https://codeberg.org/small-hack/open-slopware/pulls/525
Reviewed-by: JesseBot <jessebot@noreply.codeberg.org>

README.md

@@ -504,6 +504,10 @@ This is a section for repos that are similar to this one either because they are
 | [`spaceship-prompt`](https://spaceship-prompt.sh/) | [`v4.19.3`](https://github.com/spaceship-prompt/spaceship-prompt/releases/tag/v4.19.3) | [![Permissive AI policy](./badges/permissive-ai-policy-orange.svg)](#permissive-ai-policy) ([1](https://github.com/spaceship-prompt/spaceship-prompt/pull/1514), [2](https://github.com/spaceship-prompt/spaceship-prompt/pull/1542))<br />[![AI Code Reviews](./badges/ai-code-reviews-purple.svg)](#ai-code-reviews) ([1](https://github.com/spaceship-prompt/spaceship-prompt/pull/1513), [2](https://github.com/spaceship-prompt/spaceship-prompt/pull/1532), [3](https://github.com/spaceship-prompt/spaceship-prompt/pull/1541)) | [![Request for Help](./badges/request-for-help.svg)](#request-for-help) |
 | [Starship](https://starship.rs) | [![Request for Help](./badges/request-for-help.svg)](#request-for-help) | [![Permissive AI policy](./badges/permissive-ai-policy-orange.svg)](#permissive-ai-policy) ([1](https://github.com/starship/starship/commit/0d71065a6eb98ff00b42b2bc4ff78dad7b897a1e)) <br/> [![AI Functionality](./badges/ai-functionality-yellow.svg)](#ai-functionality) ([1](https://github.com/starship/starship/pull/7234)) | [shmonad](https://github.com/matthunz/shmonad) |
 
+> [!NOTE]
+> #### Alternative Plugin Managers
+> * [`zimfw`](https://github.com/zimfw/zimfw)
+
 ## Computer Graphics
 
 ### 3D Model Viewer