init: serde feature

[b1ek]

ref amber-lang/amber#509

[Ph0enixKM]

I see why this might be useful. Could you @b1ek highlight the advantages that inspired you to create this PR? I'm just curious what exact use case you want to fulfill

[b1ek]

to serialize Messages for the amber integrated mode. potentially useful for a very wide range of other things also

[Mte90]

@b1ek there are conflicts in this PR

[Ph0enixKM]

I want others to take a look as well

[hdwalters]

I'm not that familiar with feature support in Rust crates, but it looks like you're creating a new feature in the heraclitus crate, which in turn enables serialization/deserialization feature in the serde crate. Can I assume you've confirmed that the amber project is successfully built against your local heraclitus changes, both with and without this feature enabled?

[b1ek]

Can I assume you've confirmed that the amber project is successfully built against your local heraclitus changes, both with and without this feature enabled?

that is correct, i tested it before posting the PR

i just tested it now, it breaks some dependency versions with it enabled, but nothing that can't be fixed in 5 minutes