RUM-16985: Add browser WASM error metadata

Author: ImaneLargou

samples/rum-events/wasm-error.json

@@ -0,0 +1,33 @@
+{
+  "type": "error",
+  "date": 1591284175342,
+  "application": {
+    "id": "ac8218cf-498b-4d33-bd44-151095959547"
+  },
+  "session": {
+    "id": "cacbf45c-3a05-48ce-b066-d76349460599",
+    "type": "user"
+  },
+  "source": "browser",
+  "view": {
+    "id": "623d50fd-75cf-4025-97d2-e51ff94171f6",
+    "referrer": "",
+    "url": "https://example.com/"
+  },
+  "error": {
+    "id": "b83a5d82-cdd1-468d-9bc9-3aa9e54d957a",
+    "message": "unreachable",
+    "source": "source",
+    "stack": "RuntimeError: unreachable\n    at wasm-function[42]:0x10",
+    "source_type": "browser+wasm",
+    "wasm_modules": [
+      {
+        "url": "https://example.com/module.wasm",
+        "build_id": "abcd"
+      }
+    ]
+  },
+  "_dd": {
+    "format_version": 2
+  }
+}

schemas/rum/error-schema.json

@@ -121,6 +121,7 @@
               "enum": [
                 "android",
                 "browser",
+                "browser+wasm",
                 "ios",
                 "react-native",
                 "flutter",
@@ -275,6 +276,28 @@
               },
               "readOnly": true
             },
+            "wasm_modules": {
+              "type": "array",
+              "description": "WebAssembly modules available for stack trace symbolication.",
+              "items": {
+                "type": "object",
+                "description": "A WebAssembly module loaded by the application.",
+                "required": ["url", "build_id"],
+                "properties": {
+                  "url": {
+                    "type": "string",
+                    "description": "URL identifying the WebAssembly module.",
+                    "readOnly": true
+                  },
+                  "build_id": {
+                    "type": "string",
+                    "description": "Build ID used to identify the WebAssembly debug symbols.",
+                    "readOnly": true
+                  }
+                }
+              },
+              "readOnly": true
+            },
             "was_truncated": {
               "type": "boolean",
               "description": "A boolean value saying if any of the stack traces was truncated due to minification.",