feat: add IAM export/import

- Add complete IAM configuration export/import functionality with ZIP format
- Add new API endpoints for IAM backup and restore operations

rustfs/Cargo.toml

@@ -56,6 +56,7 @@ pin-project-lite.workspace = true
 protos.workspace = true
 query = { workspace = true }
 regex = { workspace = true }
+reqwest = { workspace = true }
 rmp-serde.workspace = true
 rustfs-config = { workspace = true, features = ["constants", "notify"] }
 rustfs-notify = { workspace = true }
@@ -98,6 +99,7 @@ rustfs-rio.workspace = true
 base64 = { workspace = true }
 hmac = { workspace = true }
 sha2 = { workspace = true }
+zip = { workspace = true }
 
 [target.'cfg(target_os = "linux")'.dependencies]
 libsystemd.workspace = true