Allow configuration of metadata structure with .toml config file #3
Description
Currently the structure and contents of the generated binary metadata is fixed. Ideally, the user should be able to customise the metadata to contain the information they're interested in, in a structure which suits them. As the metadata is generated using a proc macro, this can be achieved by reading from a config file and tailoring the generated code accordingly.
The extraction tool mentioned in #2 will also need to be able to read this config file in order to be able to identify and parse the embedded metadata.