feat: Add etcd database support

improve concurrent access and high availability of aptly with the help of the characteristics of etcd

go.mod

@@ -63,11 +63,14 @@ require (
 	github.com/chenzhuoyu/base64x v0.0.0-20230717121745-296ad89f973d // indirect
 	github.com/chenzhuoyu/iasm v0.9.0 // indirect
 	github.com/cloudflare/circl v1.3.7 // indirect
+	github.com/coreos/go-semver v0.3.0 // indirect
+	github.com/coreos/go-systemd/v22 v22.5.0 // indirect
 	github.com/gabriel-vasile/mimetype v1.4.2 // indirect
 	github.com/gin-contrib/sse v0.1.0 // indirect
 	github.com/go-playground/locales v0.14.1 // indirect
 	github.com/go-playground/universal-translator v0.18.1 // indirect
 	github.com/goccy/go-json v0.10.2 // indirect
+	github.com/gogo/protobuf v1.3.2 // indirect
 	github.com/golang/protobuf v1.5.3 // indirect
 	github.com/golang/snappy v0.0.4 // indirect
 	github.com/google/uuid v1.3.1 // indirect
@@ -90,10 +93,17 @@ require (
 	github.com/rivo/uniseg v0.4.4 // indirect
 	github.com/rogpeppe/go-internal v1.10.0 // indirect
 	github.com/twitchyliquid64/golang-asm v0.15.1 // indirect
+	go.etcd.io/etcd/api/v3 v3.5.0-rc.0 // indirect
+	go.etcd.io/etcd/client/pkg/v3 v3.5.0-rc.0 // indirect
+	go.uber.org/atomic v1.7.0 // indirect
+	go.uber.org/multierr v1.6.0 // indirect
+	go.uber.org/zap v1.17.0 // indirect
 	golang.org/x/arch v0.5.0 // indirect
 	golang.org/x/net v0.23.0 // indirect
 	golang.org/x/sync v0.3.0 // indirect
 	golang.org/x/text v0.14.0 // indirect
+	google.golang.org/genproto v0.0.0-20210602131652-f16073e35f0c // indirect
+	google.golang.org/grpc v1.38.0 // indirect
 	gopkg.in/yaml.v3 v3.0.1 // indirect
 )
 
@@ -104,4 +114,5 @@ require (
 	github.com/aws/aws-sdk-go-v2/credentials v1.13.43
 	github.com/aws/aws-sdk-go-v2/service/s3 v1.40.2
 	github.com/aws/smithy-go v1.15.0
+	go.etcd.io/etcd/client/v3 v3.5.0-rc.0
 )