feat: update installation instructions and add .SRCINFO for packaging

contrib/.SRCINFO

@@ -0,0 +1,15 @@
+pkgbase = k-shrink
+	pkgdesc = Wayland clipboard daemon that automatically compresses copied images
+	pkgver = 1.0.0
+	pkgrel = 1
+	url = https://github.com/GKaszewski/k-shrink
+	arch = x86_64
+	arch = aarch64
+	license = MIT
+	makedepends = rust
+	makedepends = cargo
+	depends = wayland
+	source = k-shrink-1.0.0.tar.gz::https://github.com/GKaszewski/k-shrink/archive/v1.0.0.tar.gz
+	sha256sums = d26601148005821c03454ea91828e5af6f3506baa1b5860b220aaac5c305cc5d
+
+pkgname = k-shrink

contrib/PKGBUILD

@@ -9,7 +9,7 @@ license=('MIT')
 depends=('wayland')
 makedepends=('rust' 'cargo')
 source=("$pkgname-$pkgver.tar.gz::$url/archive/v$pkgver.tar.gz")
-sha256sums=('SKIP')
+sha256sums=('d26601148005821c03454ea91828e5af6f3506baa1b5860b220aaac5c305cc5d')
 
 build() {
     cd "$pkgname-$pkgver"