feat(acme): support EAB credentials

Co-authored-by: techknowlogick <164197+techknowlogick@users.noreply.github.com>

modules/setting/server_test.go

@@ -0,0 +1,29 @@
+// Copyright 2026 The Gitea Authors. All rights reserved.
+// SPDX-License-Identifier: MIT
+
+package setting
+
+import (
+	"testing"
+
+	"gitea.dev/modules/test"
+
+	"github.com/stretchr/testify/assert"
+)
+
+func TestLoadAcmeEABFrom(t *testing.T) {
+	t.Cleanup(test.MockVariableValue(&AcmeEABKID, ""))
+	t.Cleanup(test.MockVariableValue(&AcmeEABHMAC, ""))
+
+	cfg, err := NewConfigProviderFromData(`
+[server]
+ACME_EAB_KID = kid
+ACME_EAB_HMAC = hmac
+`)
+	assert.NoError(t, err)
+
+	loadAcmeEABFrom(cfg.Section("server"))
+
+	assert.Equal(t, "kid", AcmeEABKID)
+	assert.Equal(t, "hmac", AcmeEABHMAC)
+}