chore: add turborepo move to pnpm

[KajSzy]

Add Turborepo + migrate to pnpm

This PR modernizes the project infrastructure by introducing Turborepo and pnpm to manage the monorepo.
This should help developing support for next v16 where this package will have to support multiple differently setup projects
(like with "use cache" directive, without it, pages router and app router etc)
pnpm allow to scale this project with turbo repo more easily while not introducing any breaking changes to final output

What Changed

• Added Turborepo for task orchestration
• Migrated to pnpm as the package manager
• Created pnpm-workspace.yaml to manage packages and examples
• Updated scripts to use Turbo commands (build, dev, lint, test)
• Added turbo.json with caching configuration

[AyronK]

Love it, I'll take a look and give it a try soon!

[AyronK]

@KajSzy great work, I test it locally and runs smoothly. One thing is that the github workflows fail, please take a look.

[AyronK]

@KajSzy more CI issues I see (CACError: Unknown option --ifPresent):

Run pnpm run build --if-present

> @fortedigital/nextjs-cache-handler@2.3.0 build /home/runner/work/nextjs-cache-handler/nextjs-cache-handler/packages/nextjs-cache-handler
> tsup --dts-resolve --if-present

CACError: Unknown option `--ifPresent`
    at Command.checkUnknownOptions (/home/runner/work/nextjs-cache-handler/nextjs-cache-handler/node_modules/.pnpm/cac@6.7.14/node_modules/cac/dist/index.js:404:17)
    at CAC.runMatchedCommand (/home/runner/work/nextjs-cache-handler/nextjs-cache-handler/node_modules/.pnpm/cac@6.7.14/node_modules/cac/dist/index.js:602:13)
    at main (/home/runner/work/nextjs-cache-handler/nextjs-cache-handler/node_modules/.pnpm/tsup@8.5.1_jiti@2.6.1_postcss@8.5.6_tsx@4.20.6_typescript@5.9.3/node_modules/tsup/dist/chunk-DI5BO6XE.js:148:13)
    at Object.<anonymous> (/home/runner/work/nextjs-cache-handler/nextjs-cache-handler/node_modules/.pnpm/tsup@8.5.1_jiti@2.6.1_postcss@8.5.6_tsx@4.20.6_typescript@5.9.3/node_modules/tsup/dist/cli-default.js:12:23)
    at Module._compile (node:internal/modules/cjs/loader:1706:14)
    at Object..js (node:internal/modules/cjs/loader:1839:10)
    at Module.load (node:internal/modules/cjs/loader:1441:32)
    at Function._load (node:internal/modules/cjs/loader:1263:12)
    at TracingChannel.traceSync (node:diagnostics_channel:328:14)
    at wrapModuleLoad (node:internal/modules/cjs/loader:237:24)
 ELIFECYCLE  Command failed with exit code 1.
Error: Process completed with exit code 1.

[AyronK]

Thanks @KajSzy, I'll take a look at the pipelines after merge and perhaps I'll move it to pnpm correctly.

[KajSzy]

Thanks @KajSzy, I'll take a look at the pipelines after merge and perhaps I'll move it to pnpm correctly.

There is little to no difference between running build with npm run build or pnpm run build
Most important command is installing those deps using pnpm which is working
I've also started working on creating two nextjs project under examples folder using next v16
https://github.com/KajSzy/nextjs-cache-handler/tree/next16-examples