Fix I2C permission issue on Fedora (#254)

[s-badran]

• Change udev rules path from /usr/lib/udev to /etc/udev for proper precedence
• Add KERNEL match to i2c-dev udev rule for better device detection
• Enhance error handling in numberpad.py for permission errors
• Ensure consistent INSTALL_UDEV_DIR_PATH across all scripts
• Add directory creation for robustness in install scripts

Related issue: #254

[kamack38]

Rules shouldn't be installed to /etc/udev but to /usr/lib/udev. If you want to change the rule priority, change its prefix (like 10 or 20).

[s-badran]

@kamack38 thanks for the feedback. Code is updated according to it.
I went for 55 priority because it loads after critical system rules (50-54) but before conflicting package rules like i2c-tools (60+). Hopefully this should provide sufficient precedence to fix Fedora's I2C issue without risking interference with core device initialization

[ldrahnik]

@s-badran Please do not include *.code-workspace, put it into your global .gitignore config instead because IDE or editor rules are user-specific and should be there.

[ldrahnik]

@s-badran Do you have concrete or theoretical experience about a situation when this directory is missing? Which distribution? I mean sudo mkdir -p $INSTALL_UDEV_DIR_PATH/rules.d.

[ldrahnik]

@s-badran Was changed udev rule tested? And permissions exception handling? Btw. I refactored the master branch to using from periphery import I2C instead of smbus2 so your branch has to be rebased.