feat: add page transitions with Swup

package.json

@@ -24,6 +24,11 @@
 		"@astrojs/rss": "^2.4.3",
 		"@astrojs/sitemap": "^1.3.3",
 		"@astrojs/tailwind": "^3.1.3",
+		"@swup/a11y-plugin": "^3.0.0",
+		"@swup/fade-theme": "^1.0.5",
+		"@swup/head-plugin": "^1.3.0",
+		"@swup/preload-plugin": "^2.2.0",
+		"@swup/scroll-plugin": "^2.0.3",
 		"astro": "^2.6.4",
 		"astro-compress": "^1.1.47",
 		"astro-critters": "^1.1.38",
@@ -51,6 +56,7 @@
 		"reading-time": "^1.5.0",
 		"sal.js": "^0.8.5",
 		"sharp": "^0.32.1",
+		"swup": "^3.1.0",
 		"tailwindcss": "^3.3.2",
 		"unist-util-visit": "^4.1.2"
 	},