feat: 算力引擎 Go 后端核心（new-api）

- 统一 OpenAI 兼容 /v1 中继 + 渠道/额度/令牌/流水
- 各领域包：relay 模型网关、model 数据层、controller 管理 API

oauth/oidc_test.go

@@ -0,0 +1,22 @@
+package oauth
+
+import (
+	"testing"
+
+	"github.com/QuantumNous/new-api/setting/system_setting"
+	"github.com/stretchr/testify/assert"
+)
+
+func TestOIDCProvider_GetName(t *testing.T) {
+	settings := system_setting.GetOIDCSettings()
+	originalDisplayName := settings.DisplayName
+	defer func() { settings.DisplayName = originalDisplayName }()
+
+	p := &OIDCProvider{}
+
+	settings.DisplayName = ""
+	assert.Equal(t, "OIDC", p.GetName())
+
+	settings.DisplayName = "  Acme SSO  "
+	assert.Equal(t, "Acme SSO", p.GetName())
+}