refactor: move ollama standalone (#1253)

.github/workflows/test.yml

packages/llamaindex/package.json

packages/llamaindex/src/embeddings/OllamaEmbedding.ts

packages/llamaindex/src/internal/deps/ollama.d.ts

packages/llamaindex/src/internal/deps/ollama.js

packages/llamaindex/src/internal/deps/ollama.license

packages/llamaindex/src/llm/index.ts

packages/llamaindex/src/llm/ollama.ts

packages/llm/ollama/package.json

packages/llm/ollama/src/index.ts

packages/llm/ollama/tsconfig.json

pnpm-lock.yaml

tsconfig.json