Restructure KnoLo into npm workspace monorepo and add package scaffolds

[HiveForensicsAI]

Motivation

• Provide a clean monorepo layout so core, CLI, adapters, examples, and a create-app template can be developed and published independently.
• Preserve the existing core implementation and its tests while enabling a quick-adoption, “try in <10 minutes” quickstart-first story.
• Add minimal scaffolding for adapters and CLI to make future phases focus on implementations rather than repo plumbing.

Description

• Convert the repository root into an npm workspace (workspaces: ["packages/*"]) and add root scripts build, test, format, and format:check to run across workspaces.
• Move the existing core sources and scripts into packages/core, update its package.json to @knolo/core (keep version 0.3.1), and ensure dist output and tests remain intact.
• Create scaffold packages @knolo/cli, @knolo/langchain, and @knolo/llamaindex with placeholder src/index.ts, minimal package.json entries, and no-op build/test scripts.
• Move the CLI entrypoint to packages/cli/bin/knolo.mjs and update its resolution logic to prefer @knolo/core (with a fallback to the local packages/core/dist); update core test references to the new CLI path.
• Add placeholders examples/nextjs-rag-chat, examples/node-cli-rag, and templates/create-knolo-app, and refresh the top of README.md to document the new structure and clearly mark implemented vs coming-soon items.

Testing

• Ran npm install at the repo root and the install completed successfully.
• Ran npm run build at the repo root and all workspace build scripts executed successfully (core compiled via tsc).
• Ran npm run test at the repo root and core tests passed after fixing CLI resolution in packages/cli/bin/knolo.mjs and updating packages/core/scripts/test.mjs to call the new CLI path; final test run succeeded.
• Verified node -e "import('@knolo/core').then(()=>console.log('ok'))" prints ok, confirming ESM workspace import resolution works.

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Codex Task