Add patch to allow alias files to redirect to their sender

patches/sieve-rs.patch

@@ -0,0 +1,27 @@
+diff --git a/Cargo.lock b/Cargo.lock
+index be36759b..b4316639 100644
+--- a/Cargo.lock
++++ b/Cargo.lock
+@@ -6404,8 +6404,7 @@ checksum = "0fda2ff0d084019ba4d7c6f371c95d8fd75ce3524c3cb8fb653a3023f6323e64"
+ [[package]]
+ name = "sieve-rs"
+ version = "0.6.0"
+-source = "registry+https://github.com/rust-lang/crates.io-index"
+-checksum = "15ac54053752c25a0e545dd1953de716abcc80b12cfe0b6c2f2c1c73759d4f45"
++source = "git+https://gitea.mathebau.de/fachschaft/sieve-rs.git#71324550504c0f84fe3e814d05cbe22f90a3b228"
+ dependencies = [
+  "ahash 0.8.11",
+  "bincode",
+diff --git a/Cargo.toml b/Cargo.toml
+index f055474f..2b64c9ac 100644
+--- a/Cargo.toml
++++ b/Cargo.toml
+@@ -63,3 +63,7 @@ incremental = false
+ debug-assertions = false
+ overflow-checks = false
+ rpath = false
++
++
++[patch.crates-io]
++sieve-rs = { git = 'https://gitea.mathebau.de/fachschaft/sieve-rs.git' }
+