OpenNetMeter: versionet e vjetra dhe historiku

- Replaced the previous graphing approach with a custom-drawn speed chart for more control and cleaner rendering
- Added a weekly trend card to the summary view
- Added sortable table controls and cleaner stat row components
- Added search about process online to the summary and history tables
- Added fallback icons when a process icon cannot be loaded
- Fixed Windows freezes during high-throughput network capture
- Fixed access-denied and race-condition issues while loading process icons
- Fixed repeated task scheduler errors on repeated app launches
- Fixed UI update dispatch issues for summary values when network state changes
- Fixed startup issues after reconnects and history profile reloads
- Fixed SQLite cleanup before deleting usage data
- Fixed mini-widget position persistence and restoration
- Fixed recovery of windows that were moved off-screen
- Fixed default settings for the mini-widget transparency slider
- Improved database error handling and startup robustness
- Cleaned up the installer and removed the unnecessary .NET runtime compatibility gate
- Refined theme colors and light-mode styling
- Improved summary/history table wrapping for long process names
- Updated DatePicker styling and visual polish
- Adjusted main window sizing and general UI spacing
- Improved graph readability with Y-axis labeling and text scaling
- Continued migration toward the Avalonia-based app structure
- Improved tray, widget, and overall app lifecycle behavior
- Updated packaging and build flow for the Avalonia-published release

## What's Changed

### Added

- Added an upgrade detection dialog to better handle upgrade scenarios.
- Added an installer custom action to close a running app instance during uninstall.

### Changed

- Updated the desktop shortcut component GUID.
- Removed unused event log installer components.

### Fixed

- Fixed MSI upgrade behavior that could remove saved user files.

What's Changed
Significant UI rework
- Feature/pin mini widget in #86
- Mini widget rework in #87
- new summary tab data usage filter option in #88
- process app icon in #89
- option to set a custom network speed format, fixed or auto in #90
- network monitor bug fix in #91
- Feature/settings page UI rework in #92
- Theme color refactor in #96
Full Changelog: v0.13.1...v0.14.0.0