feat!: monorepo landing page (#1868)

## Description

Monorepos the [landing website](https://photonvision.org)

## Meta

Merge checklist:
- [x] @mcm001 migrates all the secrets over to this repo
- [x] Add label for website stuff
- [ ] Archive the old website repo
- [x] Website gets cleaned up

website/src/css/main.css

@@ -0,0 +1,23 @@
+@import "tailwindcss";
+@theme {
+  --color-primary: #006492;
+  --color-brand-yellow: #ffd842;
+  --color-brand-blue: #39a4d6;
+}
+
+.header-btn {
+  @apply hover:text-brand-yellow text-white flex p-4 transition-colors;
+}
+.features-icon {
+  @apply absolute top-0 left-0 flex size-10 items-center justify-center rounded-lg bg-brand-blue;
+}
+
+.fas::before,
+.far::before,
+.fab::before,
+.fa-solid::before,
+.fa-regular::before,
+.fa-brands::before,
+.fa::before {
+  content: var(--fa);
+}

website/src/css/solid.min.css

@@ -0,0 +1,6 @@
+/*!
+ * Font Awesome Free 6.7.2 by @fontawesome - https://fontawesome.com
+ * License - https://fontawesome.com/license/free (Icons: CC BY 4.0, Fonts: SIL OFL 1.1, Code: MIT License)
+ * Copyright 2024 Fonticons, Inc.
+ */
+:host,:root{--fa-style-family-classic:"Font Awesome 6 Free";--fa-font-solid:normal 900 1em/1 "Font Awesome 6 Free"}@font-face{font-family:"Font Awesome 6 Free";font-style:normal;font-weight:900;font-display:block;src:url(../webfonts/fa-solid-900.woff2) format("woff2"),url(../webfonts/fa-solid-900.ttf) format("truetype")}.fa-solid,.fas{font-weight:900}