cargo: use features to determine how we build curl

Alpine Linux builds will fail for a `static-ssl`. Instead we must link
against system openssl. We now introduce a feature set that allows to
link against system ssl using `--no-default-features --features system-ssl`.

For a musl system, you also must specify
RUSTFLAGS="-C target-feature=-crt-static".

The alternative approach is to use using a
`[target.'cfg(target_env="musl")'.dependencies]` specification, that
selects features based on the `target_env`. However since we
are currently using the Cargo resolver 1, this does not work. We would
need to switch to resolver 2. In general the feature selection is more
versatile since we ask users to select the appropriate set for their
platform.

rye/Cargo.toml

@@ -17,7 +17,7 @@ clap = { version = "4.3.5", default-features = false, features = [
 ] }
 clap_complete = "4.2.1"
 console = "0.15.7"
-curl = { version = "0.4.44", features = ["ssl", "static-curl", "static-ssl"] }
+curl = { version = "0.4.44", features = ["ssl", "static-curl"] }
 decompress = { version = "0.6.0", default-features = false, features = [
     "tarzst",
     "targz",
@@ -75,3 +75,7 @@ static_vcruntime = "2.0.0"
 fslock = "0.2.1"
 insta = { version = "1.35.1", features = ["filters"] }
 insta-cmd = "0.5.0"
+
+[features]
+default = ["curl/static-ssl"]
+system-ssl = []