Add support for mobile-friendly password grouping

This commit introduces a new feature "MobileGrouping" that changes the way passwords are generated to be more mobile-friendly. The `config.go` file was updated to include this new attribute, along with its corresponding method given as an Option. Additionally, the respective unit test was added ensuring the proper function of this feature.

config.go

@@ -53,6 +53,9 @@ type Config struct {
 	// MinUpperCase represents the minimum amount of upper-case characters that have
 	// to be part of the generated password
 	MinUpperCase int64
+	// MobileGrouping indicates if the generated password should be grouped in a
+	// mobile-friendly manner
+	MobileGrouping bool
 	// Mode holds the different character modes for the Random algorithm
 	Mode ModeMask
 	// NumberPass sets the number of passwords that are generated
@@ -175,6 +178,13 @@ func WithMaxLength(length int64) Option {
 	}
 }
 
+// WithMobileGrouping enables the mobile-friendly character grouping for AlgoRandom
+func WithMobileGrouping() Option {
+	return func(config *Config) {
+		config.MobileGrouping = true
+	}
+}
+
 // WithModeMask overrides the default mode mask for the random algorithm
 func WithModeMask(mask ModeMask) Option {
 	return func(config *Config) {

config_test.go

@@ -184,6 +184,18 @@ func TestWithMinUppercase(t *testing.T) {
 	}
 }
 
+func TestWithMobileGrouping(t *testing.T) {
+	c := NewConfig(WithMobileGrouping())
+	if c == nil {
+		t.Errorf("NewConfig(WithMobileGrouping()) failed, expected config pointer but got nil")
+		return
+	}
+	if c.MobileGrouping != true {
+		t.Errorf("NewConfig(WithMobileGrouping()) failed, expected: %t, got: %t",
+			true, c.MobileGrouping)
+	}
+}
+
 func TestWithModeMask(t *testing.T) {
 	e := DefaultMode
 	c := NewConfig(WithModeMask(e))