[Server] Add support for icons on explicit builder registration and attributes (#142)

* Add support for icons on explicit builder registration and attributes

* Update docs/server-builder.md

Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>

---------

Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>

tests/Inspector/InspectorSnapshotTestCase.php

@@ -109,7 +109,8 @@ abstract class InspectorSnapshotTestCase extends TestCase
 
         $expected = file_get_contents($snapshotFile);
 
-        $this->assertJsonStringEqualsJsonString($expected, $normalizedOutput);
+        $message = \sprintf('Output does not match snapshot "%s".', $snapshotFile);
+        $this->assertJsonStringEqualsJsonString($expected, $normalizedOutput, $message);
     }
 
     protected function normalizeTestOutput(string $output, ?string $testName = null): string

tests/Inspector/Stdio/snapshots/StdioDiscoveryCalculatorTest-resources_list.json

@@ -4,6 +4,15 @@
       "name": "calculator_config",
       "uri": "config://calculator/settings",
       "description": "Current settings for the calculator tool (precision, allow_negative).",
+      "icons": [
+        {
+          "mimeType": "image/svg+xml",
+          "sizes": [
+            "any"
+          ],
+          "src": "https://www.svgrepo.com/show/529867/settings.svg"
+        }
+      ],
       "mimeType": "application/json"
     }
   ]

tests/Inspector/Stdio/snapshots/StdioDiscoveryCalculatorTest-tools_list.json

@@ -3,6 +3,15 @@
     {
       "name": "calculate",
       "description": "Performs a calculation based on the operation.",
+        "icons": [
+          {
+            "mimeType": "image/svg+xml",
+             "sizes": [
+               "any"
+             ],
+             "src": "https://www.svgrepo.com/show/530644/calculator.svg"
+          }
+        ],
       "inputSchema": {
         "type": "object",
         "properties": {