feat: support multiple storage repos (WIP)

backend/go.mod

@@ -23,6 +23,7 @@ require (
 	github.com/swaggo/swag v1.16.3
 	github.com/yeqown/go-qrcode/v2 v2.2.4
 	github.com/yeqown/go-qrcode/writer/standard v1.2.4
+	gocloud.dev v0.40.0
 	golang.org/x/crypto v0.28.0
 	modernc.org/sqlite v1.33.1
 )
@@ -44,7 +45,9 @@ require (
 	github.com/go-playground/locales v0.14.1 // indirect
 	github.com/go-playground/universal-translator v0.18.1 // indirect
 	github.com/golang/freetype v0.0.0-20170609003504-e2365dfdc4a0 // indirect
+	github.com/golang/groupcache v0.0.0-20210331224755-41bb18bfe9da // indirect
 	github.com/google/go-cmp v0.6.0 // indirect
+	github.com/googleapis/gax-go/v2 v2.13.0 // indirect
 	github.com/gorilla/websocket v1.5.1 // indirect
 	github.com/hashicorp/golang-lru/v2 v2.0.7 // indirect
 	github.com/hashicorp/hcl/v2 v2.19.1 // indirect
@@ -61,12 +64,18 @@ require (
 	github.com/swaggo/files/v2 v2.0.0 // indirect
 	github.com/yeqown/reedsolomon v1.0.0 // indirect
 	github.com/zclconf/go-cty v1.14.1 // indirect
+	go.opencensus.io v0.24.0 // indirect
 	golang.org/x/image v0.18.0 // indirect
 	golang.org/x/mod v0.20.0 // indirect
 	golang.org/x/net v0.28.0 // indirect
 	golang.org/x/sys v0.26.0 // indirect
 	golang.org/x/text v0.19.0 // indirect
 	golang.org/x/tools v0.24.0 // indirect
+	golang.org/x/xerrors v0.0.0-20240716161551-93cc26a95ae9 // indirect
+	google.golang.org/api v0.191.0 // indirect
+	google.golang.org/genproto/googleapis/rpc v0.0.0-20240812133136-8ffd90a71988 // indirect
+	google.golang.org/grpc v1.65.0 // indirect
+	google.golang.org/protobuf v1.34.2 // indirect
 	gopkg.in/yaml.v3 v3.0.1 // indirect
 	modernc.org/gc/v3 v3.0.0-20240107210532-573471604cb6 // indirect
 	modernc.org/libc v1.55.3 // indirect