chore: add npm keywords for discoverability

Author: jpr5

package.json

@@ -3,6 +3,38 @@
   "version": "1.11.0",
   "description": "Mock infrastructure for AI application testing — LLM APIs, MCP tools, A2A agents, AG-UI event streams, vector databases, search, and more. Zero dependencies.",
   "license": "MIT",
+  "keywords": [
+    "mock",
+    "llm",
+    "openai",
+    "anthropic",
+    "claude",
+    "gemini",
+    "bedrock",
+    "azure-openai",
+    "ollama",
+    "cohere",
+    "vertex-ai",
+    "mcp",
+    "a2a",
+    "ag-ui",
+    "vector",
+    "pinecone",
+    "qdrant",
+    "chromadb",
+    "testing",
+    "fixtures",
+    "sse",
+    "streaming",
+    "websocket",
+    "record-replay",
+    "drift-detection",
+    "ai-testing",
+    "api-mock",
+    "http-mock",
+    "embeddings",
+    "copilotkit"
+  ],
   "repository": {
     "type": "git",
     "url": "https://github.com/CopilotKit/aimock"