Enhance avrdude upload success detection and error handling

[Alireza-Jahanbakhshi]

This pull request improves the upload functionality in avr-utils by fixing false "Upload failed" errors and enhancing overall robustness and error reporting. The changes ensure successful uploads are correctly recognized and provide better diagnostics for debugging.

Changes

• Improved Success Detection in runAvrdude:

  • Now checks multiple success indicators: exit code 0, "avrdude done. Thank you.", and "bytes of flash verified"
  • Captures both stdout and stderr for comprehensive output analysis
  • Returns structured result object with output, errorOutput, and exitCode

• Fixed False Failures:

  • Resolved issue where successful uploads were incorrectly reported as failed

• Enhanced Error Handling:

  • Provides detailed error messages including full avrdude output
  • Better differentiation between system PATH errors and execution failures

• Updated Upload Process:

  • Integrated improved success detection in uploadToMicrocontroller
  • Added detailed console logging for upload results and errors

• Maintained Existing Features:

  • Preserved USBasp no-port requirement
  • Kept configurable fuse settings with atmega16 defaults

• Documentation Updates:

  • Updated README with new features and release notes for version 0.2.0

Related Issues

• Fixes false "Upload failed" reports despite successful completion (e.g., with "Avrdude done. Thank you.")

Testing

• Tested with USBasp and ATmega16 configuration
• Verified successful uploads now show "Upload successful!" message
• Confirmed error cases provide meaningful output
• Checked console logging provides detailed results

Checklist

• Code changes implemented and tested
• README updated with new features and release notes
• Maintains compatibility with existing functionality
• No breaking changes introduced

How to Test

1. Open an AVR project in VSCode
2. Compile a project to generate a .hex file
3. Use "Upload to Microcontroller" (F5)
4. Verify:
   • Successful uploads show "Upload successful!" message
   • Console logs show detailed output
   • Error cases (e.g., disconnected programmer) show meaningful messages

[StrongTheDev]

@Alireza-Jahanbakhshi, do you have Discord? I'd like you to join the channel at https://discord.gg/wvyFpCRu so that we can discuss development of the extension

[Alireza-Jahanbakhshi]

@StrongTheDev, I’ve joined the channel. Please update the latest release in the GitHub repository.