impl ED25519-POD as introdction pod (#2)

* impl ED25519-POD as introdction pod


* apply review suggestions from @arnaucube

---------

Co-authored-by: Sunghyeon Jo <ainta@naver.com>

Author: ainta

.github/workflows/typos.toml

@@ -1 +1,3 @@
 [default.extend-words]
+[files]
+extend-exclude = ["test_keys/*"]

Cargo.toml

@@ -8,14 +8,15 @@ itertools = "0.14.0"
 anyhow = "1.0.56"
 plonky2 = { git = "https://github.com/0xPolygonZero/plonky2" }
 base64 = "0.22.1"
-
 # we use a specific commit to avoid breaking changes in the interfaces, updating
 # to latest pod2 version from time to time.
-pod2 = { git="https://github.com/0xPARC/pod2", rev="7bc0bd08d29499df15d147e818b3c1dbdfdd5e7e" }
+pod2 = { git="https://github.com/0xPARC/pod2", rev="c66506c04871dd87c40284de31490e33e2179804" }
 
 # EcdsaPod specific dependencies:
 plonky2_ecdsa = {git = "https://github.com/ax0/plonky2-ecdsa"}
 num = { version = "0.4.0", default-features = false }
+plonky2_ed25519 = {git = "https://github.com/ainta/plonky2-ed25519"}
+ssh-key = { version = "0.6.7", features = ["ed25519"] }
 
 [features]
 default = []