chore: move under providers directory (#1349)

.github/workflows/preview.yml

.github/workflows/test.yml

packages/providers/anthropic/package.json

packages/providers/anthropic/src/agent.ts

packages/providers/anthropic/src/index.ts

packages/providers/anthropic/src/llm.ts

packages/providers/anthropic/tsconfig.json

packages/providers/clip/package.json

packages/providers/clip/src/embedding.ts

packages/providers/clip/src/index.edge-light.ts

packages/providers/clip/src/index.non-node.ts

packages/providers/clip/src/index.ts

packages/providers/clip/src/index.workerd.ts

packages/providers/clip/src/shared.ts

packages/providers/clip/tsconfig.json

packages/providers/deepinfra/package.json

packages/providers/deepinfra/src/embedding.ts

packages/providers/deepinfra/src/index.ts

packages/providers/deepinfra/src/llm.ts

packages/providers/deepinfra/tsconfig.json