Add Appian block

src/technologies.json

@@ -1745,6 +1745,16 @@
       "scripts": "adrum",
       "website": "https://appdynamics.com"
     },
+    "Appian": {
+      "cats": [
+        62
+      ],
+      "description": "Appian is an enterprise low-code application platform",
+      "icon": "Appian.png",
+      "saas": true,
+      "scripts": "\/suite\/tempo\/ui\/sail-client\/embeddedBootstrap.nocache.js",
+      "website": "https://www.appian.com"
+    },
     "AppNexus": {
       "cats": [
         36