refactor: move e2e top level (#1449)

e2e/examples/waku-query-engine/src/pages/index.tsx

e2e/examples/waku-query-engine/src/styles.css

e2e/examples/waku-query-engine/tailwind.config.js

e2e/examples/waku-query-engine/tsconfig.json

e2e/fixtures/img/llamaindex-white.png

e2e/fixtures/llm/anthropic.ts

e2e/fixtures/llm/openai.ts

e2e/mock-module.js

e2e/mock-register.js

e2e/node/claude.e2e.ts

e2e/node/embedding/clip.e2e.ts

e2e/node/fixtures/data/Alex.txt

e2e/node/fixtures/tools.ts

e2e/node/issue.e2e.ts

e2e/node/openai.e2e.ts

e2e/node/react.e2e.ts

e2e/node/snapshot/#1177.snap

e2e/node/snapshot/agent.snap

e2e/node/snapshot/agent_stream.snap

e2e/node/snapshot/agent_with_object_function_call.snap