Add RemoteAddress to mirrors (#26952)

This PR adds a new field `RemoteAddress` to both mirror types which
contains the sanitized remote address for easier (database) access to
that information. Will be used in the audit PR if merged.

models/repo/mirror.go

@@ -31,7 +31,7 @@ type Mirror struct {
 	LFS         bool   `xorm:"lfs_enabled NOT NULL DEFAULT false"`
 	LFSEndpoint string `xorm:"lfs_endpoint TEXT"`
 
-	Address string `xorm:"-"`
+	RemoteAddress string `xorm:"VARCHAR(2048)"`
 }
 
 func init() {