Call
* Fix conversion of `Call` struct names to UpperCamelCase * Update to latest heck and use ToUpperCamelCase
* add constants api to codegen Signed-off-by: Gregory Hill <gregorydhill@outlook.com> * handle constant decoding error Signed-off-by: Gregory Hill <gregorydhill@outlook.com> * fix clippy and remove extra constants allocation Signed-off-by: Gregory Hill <gregorydhill@outlook.com>