feat: Implement a webpage for self-service password resets

src/web/pages/templates/password_reset.html.j2

@@ -0,0 +1,18 @@
+{% extends "_layout.html.j2" %}
+
+{%- block title -%}
+Reset Password
+{%- endblock -%}
+
+{%- block content -%}
+<div class="panel narrow">
+    <h1>Reset Password</h1>
+    {{ user_card }}
+    {% match body %}
+        {% when PasswordResetBody::Form(reset_form) %}
+        {{ reset_form }}
+        {% when PasswordResetBody::Success %}
+        <p>Your password has been reset successfully.</p>
+    {% endmatch %}
+</div>
+{%- endblock -%}