add /kitty route to get a cat picture from CaaS

Gemfile.lock

@@ -4,7 +4,13 @@ GEM
     anyflake (0.0.1)
     ast (2.4.2)
     base64 (0.2.0)
+    bigdecimal (3.1.8)
+    csv (3.3.0)
     diff-lcs (1.6.0)
+    httparty (0.22.0)
+      csv
+      mini_mime (>= 1.0.0)
+      multi_xml (>= 0.5.2)
     json (2.10.1)
     jwt (2.10.1)
       base64
@@ -12,8 +18,11 @@ GEM
     language_server-protocol (3.17.0.4)
     lint_roller (1.1.0)
     logger (1.6.6)
+    mini_mime (1.1.5)
     minitest (5.25.4)
     multi_json (1.15.0)
+    multi_xml (0.7.1)
+      bigdecimal (~> 3.1)
     mustermann (3.0.3)
       ruby2_keywords (~> 0.0.1)
     nanoid (2.0.0)
@@ -118,6 +127,7 @@ PLATFORMS
 
 DEPENDENCIES
   anyflake
+  httparty
   jwt
   ksuid
   minitest