Enable Minimum Stock Available Label

Minimum stock left label can be displayed with the custom swatch types.
    1. Go to Products → Swatches Options → Global Settings → Other Settingswooswatches woocommerce color or image variation swatches
    2. Enable the check box to get this functionality activated.
    3. Save changes to Update the change made
By default, a min stock value is set to 5. You can decide on when to show min stock left by changing the min. stock value. Minimum value stocks left alert, add in desired value