Update the Zigtools badge

* It's fully vectorized now
    - replaced the raster logo of Zigtools with an SVG remake
    - made it more similar to the one provided by GitHub CI
* Doesn't rely on shields.io anymore
* Left the text as is, without converting it to paths to make editing it easier

.github/README.md

@@ -1,7 +1,7 @@
 ![Zig Language Server](./assets/zls.svg)
 
 ![CI](https://github.com/zigtools/zls/workflows/CI/badge.svg)
-![Zig Tools](https://img.shields.io/static/v1?label=zigtools&message=for%20all%20of%20ziguanity&color=F7A41D&logo=data:image/png;base64,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)
+![Zig Tools](./assets/zigtools.svg)
 
 Zig Language Server, or `zls`, is a language server for Zig. The Zig wiki states that "The Zig community is decentralized" and "There is no concept of 'official' or 'unofficial'", so instead of calling `zls` unofficial, and I'm going to call it a cool option, one of [many](https://github.com/search?q=zig+language+server).
 

.github/assets/zigtools.svg

@@ -0,0 +1 @@
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