add prism syntax highlighting theme

web/pw-server/src/styles/global.scss

@@ -1,2 +1,3 @@
 @forward "./variables.scss";
 @forward "./buttons.scss";
+@forward "./prism.scss";

web/pw-server/src/styles/prism.scss

@@ -0,0 +1,126 @@
+/**
+ * GHColors theme by Avi Aryan (http://aviaryan.in)
+ * Inspired by Github syntax coloring
+ */
+
+code[class*="language-"],
+pre[class*="language-"] {
+    color: #393a34;
+    font-family: "Consolas", "Bitstream Vera Sans Mono", "Courier New", Courier, monospace;
+    direction: ltr;
+    text-align: left;
+    white-space: pre;
+    word-spacing: normal;
+    word-break: normal;
+    font-size: 0.9em;
+    line-height: 1.2em;
+
+    -moz-tab-size: 4;
+    -o-tab-size: 4;
+    tab-size: 4;
+
+    -webkit-hyphens: none;
+    -moz-hyphens: none;
+    -ms-hyphens: none;
+    hyphens: none;
+}
+
+pre > code[class*="language-"] {
+    font-size: 1em;
+}
+
+pre[class*="language-"]::-moz-selection,
+pre[class*="language-"] ::-moz-selection,
+code[class*="language-"]::-moz-selection,
+code[class*="language-"] ::-moz-selection {
+    background: #b3d4fc;
+}
+
+pre[class*="language-"]::selection,
+pre[class*="language-"] ::selection,
+code[class*="language-"]::selection,
+code[class*="language-"] ::selection {
+    background: #b3d4fc;
+}
+
+/* Code blocks */
+pre[class*="language-"] {
+    padding: 1em;
+    margin: 0.5em 0;
+    overflow: auto;
+    border: 1px solid #dddddd;
+    background-color: white;
+}
+
+/* Inline code */
+:not(pre) > code[class*="language-"] {
+    padding: 0.2em;
+    padding-top: 1px;
+    padding-bottom: 1px;
+    background: #f8f8f8;
+    border: 1px solid #dddddd;
+}
+
+.token.comment,
+.token.prolog,
+.token.doctype,
+.token.cdata {
+    color: #999988;
+    font-style: italic;
+}
+
+.token.namespace {
+    opacity: 0.7;
+}
+
+.token.string,
+.token.attr-value {
+    color: #e3116c;
+}
+
+.token.punctuation,
+.token.operator {
+    color: #393a34; /* no highlight */
+}
+
+.token.entity,
+.token.url,
+.token.symbol,
+.token.number,
+.token.boolean,
+.token.variable,
+.token.constant,
+.token.property,
+.token.regex,
+.token.inserted {
+    color: #36acaa;
+}
+
+.token.atrule,
+.token.keyword,
+.token.attr-name,
+.language-autohotkey .token.selector {
+    color: #00a4db;
+}
+
+.token.function,
+.token.deleted,
+.language-autohotkey .token.tag {
+    color: #9a050f;
+}
+
+.token.tag,
+.token.selector,
+.language-autohotkey .token.keyword {
+    color: #00009f;
+}
+
+.token.important,
+.token.function,
+.token.bold {
+    font-weight: bold;
+}
+
+.token.italic {
+    font-style: italic;
+}