feat: add initial implementation of Go utilities and CI workflows

Maps/maps.go

@@ -0,0 +1,11 @@
+package Maps
+
+//goland:noinspection GoUnusedExportedFunction // library function
+func IsElementExist(s []string, str string) bool {
+	for _, v := range s {
+		if v == str {
+			return true
+		}
+	}
+	return false
+}

Maps/maps_test.go

@@ -0,0 +1,26 @@
+package Maps
+
+import "testing"
+
+func TestIsElementExist(t *testing.T) {
+	tests := []struct {
+		name     string
+		s        []string
+		str      string
+		expected bool
+	}{
+		{"element exists", []string{"a", "b", "c"}, "b", true},
+		{"element does not exist", []string{"a", "b", "c"}, "d", false},
+		{"empty slice", []string{}, "a", false},
+		{"multiple same elements", []string{"a", "b", "a"}, "a", true},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			result := IsElementExist(tt.s, tt.str)
+			if result != tt.expected {
+				t.Errorf("IsElementExist(%v, %q) = %v; want %v", tt.s, tt.str, result, tt.expected)
+			}
+		})
+	}
+}