Update made-in-rwanda collection.

[ndungtse]

Please confirm this pull request meets the following requirements:

• I followed the contributing guidelines: https://github.com/github/explore/blob/main/CONTRIBUTING.md.
• I am not the sole author or employee of a company who created either the topic I am modifying/adding or the collection entry I am modifying/adding.

Which change are you proposing?

• Suggesting edits to an existing topic or collection
• Curating a new topic or collection
• Something that does not neatly fit into the binary options above

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Editing an existing topic or collection

I'm suggesting these edits to an existing topic or collection:

• Image (and my file is *.png, square, dimensions 288x288, size <= 75 kB)
• Content (and my changes are in index.md)

I have added some missing and useful open-source projects that are made in Rwanda.
The following repositories are added:

• Next13-progressbar : A simple Next.js progressbar component using NProgress with support of next.js >=13 app dir.
• gcommit: conventional commits utility cli
• json-base: 📦 a simple odm with cli , for json file-as-bd
• string-hunt: 📦 recursive text searching algo. for small scale data
• auto-push: A tool to automatically push at a regular interval while you write your code
• package-mover: A simple npm package to transfer packages and their dependecies across projects OFFLINE

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