* Add test to understand flow of key storage
* First commit
* Committing to save trait stuff
* Working naive design
* Add keystore struct
* Move keystore files into their own module
* Add serde (de)serialize_with magic
* Add keystore test
* Fix tests
* Add comments and minor fixes
* Pass optional params to `to_keystore` function
* Add `path` field to keystore
* Add function to read Keystore from file
* Add test vectors and fix Version serialization
* Checksum params is empty object
* Add public key to Keystore
* Add function for saving keystore into file
* Deleted account_manager main.rs
* Move keystore module to validator_client
* Add save_keystore method to validator_directory
* Add load_keystore function. Minor refactorings
* Fixed dependencies
* Address some review comments
* Add Password newtype; derive Zeroize
* Fix test
* Move keystore into own crate
* Remove padding
* Add error enum, zeroize more things
* Fix comment
* Add keystore builder
* Remove keystore stuff from val client
* Add more tests, comments
* Add more comments, test vectors
* Progress on improving JSON validation
* More JSON verification
* Start moving JSON into own mod
* Remove old code
* Add more tests, reader/writers
* Tidy
* Move keystore into own file
* Move more logic into keystore file
* Tidy
* Tidy
* Allow for odd-character hex
* Add more json missing field checks
* Use scrypt by default
* Tidy, address comments
* Test path and uuid in vectors
* Fix comment
* Add checks for kdf params
* Enforce empty kdf message
* Expose json_keystore mod
* Split out encrypt/decrypt
* Replace some password usage with slice
* Expose PlainText struct
* First commits on path derivation
* Progress with implementation
* More progress
* Passing intermediate test vectors
* Tidy, add comments
* Add DerivedKey structs
* Move key derivation into own crate
* Add zeroize structs
* Return error for empty seed
* Add tests
* Tidy
* Expose consts, remove Password
* Expose SALT_SIZE
* Move dbg assert statement
* Ensure bigints are zeroized
* Try fix Cargo.toml
Co-authored-by: pawan <pawandhananjay@gmail.com>