Improve the page load of the index page.

We were seeing some slowness on the index page when looking at
lighthouse. This was largely a LCP hit from the image loading in.

This loading is improved in two ways:
- We add an SVG outline of me
- We add the "priority" prop as well: https://nextjs.org/docs/app/api-reference/components/image#priority

pages/index.tsx

@@ -34,8 +34,28 @@ const IndexPage = (): React.ReactElement => {
               maxWidth: "100%",
               height: "auto",
             }}
+            priority
           />
-          <span className="placeholder" />
+          <svg
+            id="avatar-outline"
+            width="200"
+            height="200"
+            viewBox="0 0 52.916666 52.91667"
+            version="1.1"
+          >
+            <g
+              id="layer1"
+              transform="matrix(0.45082511,0,0,0.45082511,-24.547094,-43.910986)"
+            >
+              <path
+                style={{ fill: "#e6e6e6", strokeWidth: "0.880925" }}
+                d="m 76.33544,214.61135 c 4e-5,-0.69426 0.702371,-5.7181 1.039221,-7.43364 0.121318,-0.61785 0.08048,-0.65944 -0.647635,-0.65944 -1.122382,0 -2.121179,0.42994 -2.528901,1.08859 -0.25921,0.41873 -0.354772,1.18776 -0.354772,2.85502 0,2.25225 -0.0076,2.28394 -0.583828,2.43701 -0.321106,0.0853 -0.805355,0.0418 -1.07611,-0.0967 -0.270754,-0.13847 -0.759014,-0.31256 -1.085021,-0.38685 -0.487491,-0.1111 -0.623828,-0.31666 -0.767814,-1.15767 -0.326649,-1.90796 -0.158725,-3.25622 0.583966,-4.68864 0.383382,-0.73941 0.918848,-1.53955 1.189922,-1.77808 1.049387,-0.92341 1.828418,-1.79796 2.680028,-3.00865 l 0.885544,-1.25893 h 1.544056 1.544056 l 0.250431,-1.73851 c 0.275038,-1.90935 1.430675,-7.73195 1.924652,-9.69725 0.283891,-1.12948 0.276405,-1.28463 -0.08099,-1.67858 -0.48418,-0.53368 -2.477903,-6.75785 -2.477903,-7.73571 0,-0.38989 -0.118836,-0.98496 -0.264079,-1.32237 -0.21793,-0.50628 -0.183977,-0.81204 0.194304,-1.74979 0.594952,-1.47488 1.202522,-3.49229 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+                id="path9537"
+              />
+            </g>
+          </svg>
+
+          <span id="avatar-placeholder" />
         </div>
         <h1>Douglas Anderson</h1>
         <h2>{byline}</h2>

styles/_index_page.scss

@@ -10,14 +10,26 @@
     position: relative;
     left: 0;
     top: 0;
+    width: 20rem;
+    height: auto;
+    padding: 0;
   }
 
-  .placeholder {
+  #avatar-outline {
+    border-radius: 50%;
     position: absolute;
     left: 0;
     top: 0;
     z-index: -1;
     display: block;
+  }
+
+  #avatar-placeholder {
+    position: absolute;
+    left: 0;
+    top: 0;
+    z-index: -2;
+    display: block;
     width: 20rem;
     height: auto;
     min-height: 20rem;