Summary:
- Replace version checking logic using pkg_resources and importlib with a subprocess call to `esptool.py version`
- This change enhances compatibility with esptool installed via pipx and simplifies the version retrieval process
Impact:
- No functional changes; the script continues to prompt for installation if esptool is not found
- Increases maintainability by reducing dependency on Python version checks
Signed-off-by: Huang Qi <huangqi3@xiaomi.com>
