feat: add pokemon logo as svg to README

chore: replace external pokemon logo with local svg file

Author: ancientcatz

README.md

@@ -1,5 +1,5 @@
 <div align="center">
-    <img height="250" width="350" src="https://cdn.simpleicons.org/pokemon/FFCC00" alt="pokemon-logo"/>
+    <img height="250" width="350" src="pokemon.svg" alt="pokemon-logo"/>
     <h1>Pokémon CLI</h1>
     <img src="https://img.shields.io/github/v/release/digitalghost-dev/poke-cli?style=flat-square&logo=git&logoColor=FFCC00&label=Release%20Version&labelColor=EEE&color=FFCC00" alt="version-label">
     <img src="https://img.shields.io/docker/image-size/digitalghostdev/poke-cli/v0.10.0?arch=arm64&style=flat-square&logo=docker&logoColor=FFCC00&labelColor=EEE&color=FFCC00" alt="docker-image-size">