feat(bdk-persist): extract persistence traits to new crate

example-crates/example_cli/Cargo.toml

@@ -7,6 +7,7 @@ edition = "2021"
 
 [dependencies]
 bdk_chain = { path = "../../crates/chain", features = ["serde", "miniscript"]}
+bdk_persist = { path = "../../crates/persist" }
 bdk_file_store = { path = "../../crates/file_store" }
 bdk_tmp_plan = { path = "../../nursery/tmp_plan" }
 bdk_coin_select = { path = "../../nursery/coin_select" }

example-crates/example_cli/src/lib.rs

@@ -19,9 +19,10 @@ use bdk_chain::{
         descriptor::{DescriptorSecretKey, KeyMap},
         Descriptor, DescriptorPublicKey,
     },
-    Anchor, Append, ChainOracle, DescriptorExt, FullTxOut, Persist, PersistBackend,
+    Anchor, Append, ChainOracle, DescriptorExt, FullTxOut,
 };
 pub use bdk_file_store;
+use bdk_persist::{Persist, PersistBackend};
 pub use clap;
 
 use clap::{Parser, Subcommand};