Fix CPU temperature sensor path detection and parsing

[Surojit890]

Pull Request Description

Summary

This PR fixes CPU temperature detection by improving how hardware monitor sensors are discovered and parsed across Intel and AMD systems.

What Changed

• Reworked CPU temperature lookup to prefer valid package-level sensor paths from hwmon.
• Added safer temperature parsing with better fallbacks.
• Improved lm-sensors regex parsing to support more output formats.
• Refactored temp reading into helper methods for cleaner logic and easier maintenance.
• Fixed hwmon scanning flow so it does not stop early when one candidate path is invalid.

Why

Some systems were reporting incorrect CPU temperature values or failing to detect temperature because sensor path selection was too rigid and could exit too early.

Validation

• dotnet restore succeeded
• dotnet build -c Release succeeded
• dotnet publish -c Release -r linux-x64 --self-contained true succeeded

Impact

• Better CPU temperature reliability across different Linux hardware/sensor setups.
• No breaking API or UI changes.

Issue

Fixes #207

[PXDiv]

Thank you for the PR!
Will be adding to the next release after more testing from the community.