feat: Add playground to website (#316)

chore: Add nvmrc that requires node 16

Co-authored-by: Oscar Spencer <[email protected]>

Author: phated

.gitignore

@@ -8,3 +8,5 @@ _multiconfig.yml
 /docs
 /guide
 /blog
+/try
+/*.gr.wasm

.nvmrc

@@ -0,0 +1 @@
+16

index.html

@@ -52,6 +52,7 @@
         <a href="/docs/intro" class="nav-link heading">Documentation</a>
         <a href="https://github.com/grain-lang/grain/graphs/contributors" class="nav-link heading">Community</a>
         <a href="/blog" class="nav-link heading">Blog</a>
+        <a href="/try" class="nav-link heading">Try</a>
       </div>
       <div class="nav-social-links">
         <a href="https://github.com/grain-lang/grain" class="nav-link"><i class="fab fa-github nav-social-link"></i></a>
@@ -64,6 +65,7 @@
       <a href="/docs/intro" class="nav-link heading">Documentation</a>
       <a href="https://github.com/grain-lang/grain/graphs/contributors" class="nav-link heading">Community</a>
       <a href="/blog" class="nav-link heading">Blog</a>
+      <a href="/try" class="nav-link heading">Try</a>
     </div>
     <div class="hero-content">
       <img class="brand" width="192" height="206" src="/images/grain_shorthand_white.svg">