Refactor monitoring package: remove platform-specific files and consolidate OS detection and process counting logic

- Deleted os_windows.go and process_windows.go, replacing them with platform-agnostic implementations in unit directory.
- Removed Linux-specific process counting logic from process_linux.go and integrated it into unit.
- Consolidated uptime and OS name retrieval into unit files for better organization.
- Updated update mechanism to use global variables for current version and repository.
- Introduced command-line flags for configuration, including disabling auto-update and web SSH.
- Implemented WebSocket connection handling and terminal interaction for both Unix and Windows systems.
- Added basic info upload functionality to server package, enhancing monitoring capabilities.

.github/workflows/release.yml

@@ -36,7 +36,7 @@ jobs:
           if [ "${{ matrix.goos }}" = "windows" ]; then
             BINARY_NAME=${BINARY_NAME}.exe
           fi
-          go build -trimpath -ldflags="-s -w -X main.CurrentVersion=${VERSION}" -o $BINARY_NAME
+          go build -trimpath -ldflags="-s -w -X update.CurrentVersion=${VERSION}" -o $BINARY_NAME
 
       - name: Upload binary to release
         env: