Add Cross-Platform avrdude Download + Upload UX Improvements

[Alireza-Jahanbakhshi]

✨ Description

This pull request enhances the AVR upload experience by expanding the list of supported programmer types and improving the overall configuration flow. It adds robust cross-platform support, better UX, and thoughtful developer conveniences.

---

✅ Changes

• 🔽 Expanded Programmer Options
  Added 13+ popular avrdude programmer types:

  usbasp, avrisp2, stk500v1, stk500v2,
  arduino, wiring, avrisp, usbtiny,
  dragon_isp, dragon_dw, jtag1, jtag2, pickit2, ponyser
  

  Includes "Custom..." entry for flexibility.

• 🧠 Improved Upload UX

  • Cleaner, descriptive QuickPick interface for programmer, MCU, and port.
  • Saves and reuses user preferences between sessions.

• 📦 Download Enhancements

  • Platform-aware avrdude auto-download (Windows, Linux, macOS).
  • Archive format detection (.zip, .tar.gz) with correct extract logic.
  • Grants executable permissions on Unix systems using chmod.

• 🛡️ Stability & Debugging

  • Fallback to system avrdude if download declined.
  • Verifies binary exists after extraction.
  • Console logging added to help trace issues.

• 🧼 Refactoring

  • Helper functions organized and cleaned up for clarity.

---

🧪 Testing

• ✅ New programmer options confirmed in dropdown menu.
• ✅ Saved upload settings verified across sessions.
• ✅ Auto-download tested with GitHub redirects.
• ✅ Upload functionality confirmed on Windows and Linux.

---

🔗 Related To

Builds on:
Add Automatic avrdude Download Feature with Redirect Handling

---

🙏 Personal Note

I'd love to be credited on the extension page:
https://marketplace.visualstudio.com/items?itemName=agani-ds.avr-utils

I plan to recommend this extension to my students — it's a huge productivity win for AVR devs in VSCode.

---

💡 Optional Enhancements (Future Consideration)

• 🔌 Auto-detect serial ports instead of using a static list.
• 🧹 Add a "Reset Upload Settings" command to the UI.
• 🧠 Cache downloaded avrdude version to prevent re-downloading.

---

✅ Final Checklist

Feature	✅ Status	Notes
Platform-specific avrdude URLs	✅	Windows, Linux, macOS covered
Archive format detection	✅	zip vs tar handled properly
Extract logic	✅	Clean switch between decompress and tar.x
🔐 chmod for Unix binaries	✅	Correctly placed and scoped
Saved upload settings prompt	✅	Great UX with fallback to manual config
System avrdude fallback	✅	Gracefully handled
Temporary file naming	✅	path.basename() used for temp files
Redirect handling	✅	followRedirects() used to resolve GitHub redirects
Binary check post-extraction	✅	Verifies avrdude exists before continuing
Console logging for debug	✅	Helpful logs for troubleshooting
All helper functions in place	✅	Modular and maintainable structure

[StrongTheDev]

These are my comments for this PR 👍

About crediting you on the page at the extension marketplace, just make a PR adding yourself to the authors tag in package.json, and I'll merge it.

"authors": [
    {
      "name": "Agani Daniel Strong",
      "email": "aganidanielstrong@gmail.com",
      "url": "https://github.com/StrongTheDev"
    },
    {
      "name": "Alireza....",
      "email": "alireza@example.com",
      "url": "https://alireza.com"
    }
  ],

[StrongTheDev]

This is good for the start. I'll work on an improvement soon. (to the downloading functionality, that is.)

[StrongTheDev]

I will also update this code later to modularize it, since I had the same functions already (at the bottom of getToolchain.js)
And also, thanks for these. These are great additions to the extension

[Alireza-Jahanbakhshi]

Happy you like the additions! Modularizing getToolchain.js duplicates is a great call for cleaner code.