[ABW-3860] Move submit tx & poll tx status to Sargon (#230)

* add sargon_os_transactions with methods to submit tx

* add sargon_os_transactions with methods to submit tx

* WIP

* delete method to format intent

* WIP

* using tokio (should revert as it doesn't work)

* use async-std

* WIP tests

* poll tests

* submit transaction tests

* bump

* Remove submit_compiled_transaction from OS

* remove useless derives and format

* test the delay among polls

* Revert "delete method to format intent"

This reverts commit 5e04b7e.

* bump

crates/sargon/Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "sargon"
-version = "1.1.27"
+version = "1.1.28"
 edition = "2021"
 build = "build.rs"
 
@@ -175,6 +175,10 @@ base64 = { git = "https://github.com/marshallpierce/rust-base64.git", rev = "e14
 reqwest = { git = "https://github.com/seanmonstar/reqwest", rev = "0720159f6369f54e045a1fd315e0f24b7a0b4a39", default-features = false, features = [
   "native-tls-vendored",
 ] }
+
+# async-std = "1.13.0"
+async-std = "1.13.0"
+
 # Fixes nasty iOS bug "_kSecMatchSubjectWholeString", see https://github.com/kornelski/rust-security-framework/issues/203
 # This is a workaround to fix a bug with version 2.11.0 that added some symbols that are not available on iOS
 # The bug is fixed already but the fix is not released yet. https://github.com/kornelski/rust-security-framework/pull/204

crates/sargon/src/core/types/epoch.rs

@@ -10,6 +10,8 @@ uniffi::custom_newtype!(Epoch, u64);
     PartialEq,
     Eq,
     Hash,
+    Serialize,
+    Deserialize,
     Ord,
     PartialOrd,
     derive_more::Display,