Update layout to be a svelte monorepo with shadcn-svelte

Also: add the start of a.starrysky.fyi
diff --git a/apps/a/src/app.postcss b/apps/a/src/app.postcss
new file mode 100644
index 0000000..76589de
--- /dev/null
+++ b/apps/a/src/app.postcss
@@ -0,0 +1,49 @@
+/* Write your global styles here, in PostCSS syntax */
+@tailwind base;
+@tailwind components;
+@tailwind utilities;
+
+@layer base {
+	:root {
+		--background: 224 71% 4%;
+		--foreground: 213 31% 91%;
+
+		--muted: 223 47% 11%;
+		--muted-foreground: 215.4 16.3% 56.9%;
+
+		--popover: 224 71% 4%;
+		--popover-foreground: 215 20.2% 65.1%;
+
+		--card: 224 71% 4%;
+		--card-foreground: 213 31% 91%;
+
+		--border: 216 34% 17%;
+		--input: 216 34% 17%;
+
+		--primary: 210 40% 98%;
+		--primary-foreground: 222.2 47.4% 1.2%;
+
+		--secondary: 222.2 47.4% 11.2%;
+		--secondary-foreground: 210 40% 98%;
+
+		--accent: 216 34% 17%;
+		--accent-foreground: 210 40% 98%;
+
+		--destructive: 359 51% 48%;
+		--destructive-foreground: 210 40% 98%;
+
+		--ring: 216 34% 17%;
+
+		--radius: 0.5rem;
+	}
+}
+
+@layer base {
+	* {
+		@apply border-border;
+	}
+	body {
+		@apply bg-background text-foreground;
+		font-feature-settings: 'rlig' 1, 'calt' 1;
+	}
+}