Extract system message templates to template files

public/scripts/templates/welcome.html

@@ -0,0 +1,72 @@
+<h3>
+    <span id="version_display_welcome">SillyTavern</span>
+    <div id="version_display_welcome"></div>
+</h3>
+<a href="https://docs.sillytavern.app/usage/update/"" target=" _blank">
+    Want to update?
+</a>
+<hr>
+<h3>How to start chatting?</h3>
+<ol>
+    <li>Click <code><i class="fa-solid fa-plug"></i></code> and select a <a href="https://docs.sillytavern.app/usage/api-connections/" target="_blank">Chat API</a>.</li>
+    <li>Click <code><i class="fa-solid fa-address-card"></i></code> and pick a character</li>
+</ol>
+<hr>
+<h3>
+    Want more characters?
+</h3>
+<i>
+    Not controlled by SillyTavern team.
+</i>
+<ul>
+    <li>
+        <a target="_blank" href="https://discord.gg/pygmalionai">
+            Pygmalion AI Discord
+        </a>
+    </li>
+    <li>
+        <a target="_blank" href="https://chub.ai/">
+            Chub (NSFW)
+        </a>
+    </li>
+</ul>
+<hr>
+<h3>Confused or lost?</h3>
+<ul>
+    <li>
+        <span class="note-link-span">?</span> - click these icons!
+    </li>
+    <li>
+        Enter <code>/?</code> in the chat bar
+    </li>
+    <li>
+        <a target="_blank" href="https://docs.sillytavern.app/">
+            SillyTavern Documentation Site
+        </a>
+    </li>
+    <li>
+        <a target="_blank" href="https://docs.sillytavern.app/extras/installation/">
+            Extras Installation Guide
+        </a>
+    </li>
+</ul>
+
+<hr>
+<h3>Still have questions?</h3>
+<ul>
+    <li>
+        <a target="_blank" href="https://discord.gg/RZdyAEUPvj">
+            Join the SillyTavern Discord
+        </a>
+    </li>
+    <li>
+        <a target="_blank" href="https://github.com/SillyTavern/SillyTavern/issues">
+            Post a GitHub issue
+        </a>
+    </li>
+    <li>
+        <a target="_blank" href="https://github.com/SillyTavern/SillyTavern#questions-or-suggestions">
+            Contact the developers
+        </a>
+    </li>
+</ul>