Bundle proto-rpc

[mondoreale]

This pull request updates the build and packaging pipeline for the proto-rpc package to improve module output, type bundling, and cleanup. The changes introduce Rollup for bundling, refine the output structure, and add supporting scripts and dependencies.

Build and packaging improvements:

• Added a new rollup.config.mts configuration file to bundle both CommonJS (exports.cjs) and ES module (exports.js) outputs, as well as generate bundled type definitions (exports.d.ts).
• Updated package.json to point main to ./dist/src/exports.cjs, add a module entry for ESM, and restrict the published files to only the bundled outputs.
• Added a postbuild script to run Rollup after TypeScript compilation, and a reset-self script to clean up build artifacts before building.

Dependency updates:

• Added build-related devDependencies: rollup, rollup-plugin-dts, @rollup/plugin-node-resolve, tsx, and rimraf for improved bundling and cleanup.

TypeScript configuration:

• Updated tsconfig.json to use module: preserve and moduleResolution: bundler to better support the new bundling workflow.

[Copilot]

Pull request overview

This PR introduces a bundling pipeline for the proto-rpc package using Rollup to generate optimized CommonJS and ES module outputs with bundled type definitions. The changes modernize the build process and improve the package's distribution structure.

Key changes:

• Implemented Rollup-based bundling with both CJS and ESM outputs
• Updated TypeScript configuration to use module: preserve and moduleResolution: bundler for better bundler support
• Added cleanup and build orchestration scripts with rimraf and tsx

Reviewed changes

Copilot reviewed 3 out of 4 changed files in this pull request and generated 2 comments.

File	Description
packages/proto-rpc/rollup.config.mts	New Rollup configuration defining build outputs for both JavaScript formats and type definitions
packages/proto-rpc/package.json	Updated entry points, build scripts, and dependencies to support the new bundling workflow
packages/proto-rpc/tsconfig.json	Modified TypeScript module settings to align with bundler-based resolution
package-lock.json	Dependency lockfile updates for new rollup-related packages and rimraf

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