feat: bundle-stats plugin poc implementation

[BioPhoton]

Bundle Stats Plugin PoC Implementation

Fine-grained bundle size tracking for your builds
This plugin enables advanced bundle stats capabilities to avoiding unwanted size increase.

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📝 Related Issue

👉 #1015 – Bundle Stats Plugin Architecture Discussion

NOTE:
This PoC PR serves as an initial implementation to validate the proposed architecture and core functionality.
The final implementation will be delivered in smaller, focused PRs to ensure clarity, better reviewability, and incremental improvements.

The final implementation is delivered in the following PR's:

• utils
• runner
  • unify logic
  • rest of processing logic
• plugin
• docs
• e2e

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🔌 Plugin Overview

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Report Eaxmples

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Code PushUp Report

🏷 Category	⭐ Score	🛡 Audits
Bundle Size	🟡 54	13

🏷 Categories

Performance

Bundle size metrics 📖 Docs

🟢 Score: 92

• 🟥 Bundle size changes InitialChunk (BundleSize) - 1 warning

🛡️ Audits

Bundle size changes InitialChunks (CodePushUp)

🟥 3 info (score: 0)

Initial Chunks

🗂️ initial-bundles                               237.16 kB  101 files
├── 📍 main-XTHQ3HCO.js                            98.01 kB   14 files
│   ├── src/app/app.routes.ts                         101 B     1 file
│   ├── src/app/app.config.ts                          53 B     1 file
│   ├── src/app/app.component.ts                   17.59 kB     1 file
│   ├── src/main.ts                                    37 B     1 file
│   ├── 🅰️ @angular/common                         5.46 kB    4 files
│   ├── 🅰️ @angular/platform-browser              11.47 kB    3 files
│   └── 🅰️ @angular/router                        63.31 kB    3 files
├── 📍 polyfills-B6TNHZQ6.js                       33.77 kB    2 files
│   ├── angular:polyfills:angular:polyfills                     1 file
│   └── 📦 zone.js                                 33.77 kB     1 file
├── 📄 styles-EGIV7BA7.css                            631 B     1 file
└── 🔗 static imports from 📍 main-XTHQ3HCO.js    104.76 kB   84 files
    └── 📄 chunk-5QRGP6BJ.js

Issues

Severity	Message	Source file	Line(s)
⚠️ warning	Bundle size (236.51 kB) is below minimum threshold (300 kB)

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CI Comment

🔌 Plugin	🛡️ Audit	📏 Previous value	📏 Current value	🔄 Value change
Bundle size	Total	🟨 12.0 MB	🟥 13.1 MB	↑ +9.2 %
Bundle size	Initial Chunks	🟩 6.0 MB	🟩 6.2 MB	↑ +3.3 %
Bundle size	Lazy Chunks	🟥 6.0 MB	🟥 6.9 MB	↑ +15.0 %
Bundle size	Main Bundle	🟨 5.0 MB	🟥 5.2 MB	↑ +4.0 %
Bundle size	Auth Module	🟨 1.1 MB	🟥 1.3 MB	↑ +18.2 %
Bundle size	Lazy Products	🟩 3.0 MB	🟩 3.1 MB	↑ +3.3 %

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