Find and apply the MSRV, `rust-version = "1.78.0"` to the
`radicle-git` crates.
While applying this change, use the workspace values to clean up
repetition.
The main dependant of `radicle-git`, and its crates, is [`heartwood`].
It is licensed under MIT or Apache-2.0, which has been incompatible with the GPL-3.0 license.
Since the intellectual property of this code base is with the Better Internet Foundation, it was
decided to re-license code in this repository to make the upstream repository compatible.
- Remove the license headers (and instructions to add them)
- Add MIT and Apache-2.0 licenses
- Remove the GPL-3.0 license
- Change the license declarations in the `Cargo.toml` files
[`heartwood`]: https://app.radicle.xyz/nodes/seed.radicle.xyz/rad:z3gqcJUoA1n9HaHKufZs5FCSGazv5
Fintan Halpenny