SCORU/injector: move injector library to src/
Context
This MR simply moves the injector library (for the alpha rollup node) into src
instead of src/proto_alpha
.
It follows !7673 (merged).
The next step is the protocol client code registration mechanism.
Next MR: !7681 (merged).
Manually testing the MR
CI. Refactoring.
Edited by Alain Mebsout