Fix missing utils package for fresh clones

- Remove aggregator-server/internal/utils/ from gitignore
- Add utils/version.go with version comparison functions
- Resolves 'does not contain package' error when cloning from GitHub

aggregator-server/internal/utils/version.go

@@ -0,0 +1,53 @@
+package utils
+
+import (
+	"strconv"
+	"strings"
+)
+
+// CompareVersions compares two semantic version strings
+// Returns:
+//   -1 if version1 < version2
+//    0 if version1 == version2
+//    1 if version1 > version2
+func CompareVersions(version1, version2 string) int {
+	// Parse version strings (expected format: "0.1.4")
+	v1Parts := parseVersion(version1)
+	v2Parts := parseVersion(version2)
+
+	// Compare major, minor, patch versions
+	for i := 0; i < 3; i++ {
+		if v1Parts[i] < v2Parts[i] {
+			return -1
+		}
+		if v1Parts[i] > v2Parts[i] {
+			return 1
+		}
+	}
+
+	return 0
+}
+
+// IsNewerVersion returns true if version1 is newer than version2
+func IsNewerVersion(version1, version2 string) bool {
+	return CompareVersions(version1, version2) == 1
+}
+
+// parseVersion parses a version string like "0.1.4" into [0, 1, 4]
+func parseVersion(version string) [3]int {
+	// Default version if parsing fails
+	result := [3]int{0, 0, 0}
+
+	// Remove any 'v' prefix and split by dots
+	cleanVersion := strings.TrimPrefix(version, "v")
+	parts := strings.Split(cleanVersion, ".")
+
+	// Parse each part, defaulting to 0 if parsing fails
+	for i := 0; i < len(parts) && i < 3; i++ {
+		if num, err := strconv.Atoi(parts[i]); err == nil {
+			result[i] = num
+		}
+	}
+
+	return result
+}