Add hack font

src/lib/scss/_custom-bulma.scss

@@ -27,6 +27,7 @@ $weight-normal: 400;
 $body-background-color: $black;
 
 $family-sans-serif: Nunito, $family-sans-serif;
+$family-monospace: Hack, $family-monospace;
 
 $text: $grey-light;
 $text-strong: $primary;

src/lib/scss/_fonts.scss

@@ -24,4 +24,25 @@ $weights: 300, 400, 500, 600, 700;
   $display: auto,
   $style: normal,
   $fontDir: "~/node_modules/@fontsource/arimo/files"
-)
+);
+
+// Hack *does* come with its own CSS, but it's broken and hasn't seen
+// a release since https://github.com/source-foundry/Hack/issues/467
+// was resolved.
+
+$variants:
+  regular 400 normal,
+  bold 700 normal,
+  italic 400 italic,
+  bolditalic 700 italic;
+
+@each $name, $weight, $style in $variants {
+  @font-face {
+    font-family: "Hack";
+    src:
+    url("~/node_modules/hack-font/build/web/fonts/hack-#{$name}-subset.woff2?sha=3114f1256") format("woff2"),
+    url("~/node_modules/hack-font/build/web/fonts/hack-#{$name}-subset.woff?sha=3114f1256") format("woff");
+    font-weight: $weight;
+    font-style: $style;
+  }
+}