Add a few more snippets

snippets/demo-webr-dev-console.js

@@ -0,0 +1,16 @@
+var webRready = await import('https://webr.r-wasm.org/latest/webr.mjs').then(
+  async ({ WebR }) => {
+    const webR = new WebR();
+    await webR.init();
+    return webR;
+  }
+);
+
+webRready.version
+webRready.evalR('set.seed(1); rnorm(10,5,1)');
+
+let result = await webRready.evalR('set.seed(1); rnorm(10,5,1)');
+result
+
+let output = await result.toArray();
+output

snippets/hello_world.c

@@ -0,0 +1,7 @@
+#include <stdio.h>
+
+int main() {
+  printf("Hello, world!\n");
+
+  return 0;
+}