Add pmtiles support

package.json

@@ -37,6 +37,7 @@
     "http-shutdown": "1.2.2",
     "morgan": "1.10.0",
     "pbf": "3.2.1",
+    "pmtiles": "2.11.0",
     "proj4": "2.9.0",
     "request": "2.88.2",
     "sanitize-filename": "1.6.3",

public/templates/index.tmpl

@@ -78,7 +78,7 @@
           {{/if}}
           <div class="details">
             <h3>{{name}}</h3>
-            <p class="identifier">identifier: {{@key}}{{#if formatted_filesize}} | size: {{formatted_filesize}}{{/if}} | type: {{#is_vector}}vector{{/is_vector}}{{^is_vector}}raster{{/is_vector}} data</p>
+            <p class="identifier">identifier: {{@key}}{{#if formatted_filesize}} | size: {{formatted_filesize}}{{/if}} | type: {{#is_vector}}vector{{/is_vector}}{{^is_vector}}raster{{/is_vector}} data {{#if source_type}} | ext: {{source_type}}{{/if}}</p>
             <p class="services">
               services: <a href="{{public_url}}data/{{@key}}.json{{&../key_query}}">TileJSON</a>
               {{#if wmts_link}}