Add public icon list endpoint

src/main/kotlin/com/android/trisolarisserver/security/FirebaseAuthFilter.kt

@@ -29,6 +29,7 @@ class FirebaseAuthFilter(
             || path.matches(Regex("^/properties/[^/]+/rooms/[^/]+/images$"))
             || path.matches(Regex("^/properties/[^/]+/room-types$"))
             || (path == "/image-tags" && request.method.equals("GET", true))
+            || path == "/icons/png"
     }
 
     override fun doFilterInternal(

src/main/kotlin/com/android/trisolarisserver/security/SecurityConfig.kt

@@ -30,6 +30,7 @@ class SecurityConfig(
                 it.requestMatchers("/properties/*/rooms/*/images").permitAll()
                 it.requestMatchers("/properties/*/room-types").permitAll()
                 it.requestMatchers(org.springframework.http.HttpMethod.GET, "/image-tags").permitAll()
+                it.requestMatchers("/icons/png").permitAll()
                 it.anyRequest().authenticated()
             }
             .exceptionHandling {