docs: add Snap Store badge to README and release notes

Author: NDXDeveloper

.github/workflows/ci.yml

@@ -996,6 +996,9 @@ jobs:
           ```
 
           #### Linux (Snap Store - Recommended)
+
+          [![Get it from the Snap Store](https://snapcraft.io/en/dark/install.svg)](https://snapcraft.io/slashsum)
+
           ```bash
           sudo snap install slashsum
           sudo snap connect slashsum:home

README.md

@@ -35,6 +35,10 @@
 
 ## 🚀 Quick Start
 
+<a href="https://snapcraft.io/slashsum">
+  <img alt="Get it from the Snap Store" src="https://snapcraft.io/en/dark/install.svg" />
+</a>
+
 ```bash
 # Linux (Snap Store - recommended)
 sudo snap install slashsum
@@ -82,6 +86,10 @@ slashsum myfile.iso --save
 
 ### Option 1: Linux (Snap Store) - Recommended ⭐
 
+<a href="https://snapcraft.io/slashsum">
+  <img alt="Get it from the Snap Store" src="https://snapcraft.io/en/dark/install.svg" />
+</a>
+
 ```bash
 sudo snap install slashsum
 ```