Add asset fingerprinting, build/dev scripts

Add fingerprinting for the CSS file, as well as npm scripts for all
common build and dev tasks.

package.json

@@ -4,8 +4,15 @@
   "private": true,
   "description": "The website on kosmos.org",
   "scripts": {
-    "build:css": "",
-    "dev": "tailwindcss -i ./themes/kosmos-22/source/main.css -o ./themes/kosmos-22/static/css/main.css --watch"
+    "clean": "rm -rf public/*",
+    "build:css": "tailwindcss -i ./themes/kosmos-22/source/main.css -o ./themes/kosmos-22/assets/css/main.css",
+    "build:site": "hugo",
+    "build:release": "npm-run-all clean prod:css prod:site",
+    "prod:css": "npm run build:css -- --minify",
+    "prod:site": "hugo --gc --minify",
+    "dev": "npm-run-all --parallel dev:*",
+    "dev:css": "npm run build:css -- --watch",
+    "dev:site": "hugo server --disableFastRender"
   },
   "repository": {
     "type": "git",