feat(general): Add new debug image variants (#188)

This adds new variants for debug images (`elf`, `macho` and `pe`). Since they are structurally equivalent, they all use the same type `NativeDebugImage`, which is also used by the now legacy `symbolic` variant. `apple` is now considered a legacy alias to `macho`.

Author: jan-auer

Cargo.lock

@@ -8,7 +8,7 @@ edition = "2018"
 bytecount = "0.5.0"
 chrono = "0.4.6"
 cookie = { version = "0.11.0", features = ["percent-encode"] }
-debugid = { version = "0.3.1", features = ["with_serde"] }
+debugid = { version = "0.5.1", features = ["serde"] }
 dynfmt = { version = "0.1.1", features = ["python", "curly"] }
 failure = "0.1.5"
 hmac = "0.7.0"