feat(dev): Add provider example package

internal/provider/example/connection.go

@@ -0,0 +1,16 @@
+package example
+
+import (
+	"github.com/qdm12/gluetun/internal/configuration/settings"
+	"github.com/qdm12/gluetun/internal/models"
+	"github.com/qdm12/gluetun/internal/provider/utils"
+)
+
+func (p *Provider) GetConnection(selection settings.ServerSelection) (
+	connection models.Connection, err error) {
+	// TODO: Set the default ports for each VPN protocol+network protocol
+	// combination. If one combination is not supported, set it to `0`.
+	defaults := utils.NewConnectionDefaults(443, 1194, 51820) //nolint:gomnd
+	return utils.GetConnection(p.Name(),
+		p.storage, selection, defaults, p.randSource)
+}