Refactor naming and crates info (#8)

* Refactor naming and crates info

This commit:
* changes workspace crates to have a `wiggle_` prefix in names
* rename `memory` module of `wiggle-memory` crate to `runtime`
* fixes authors of all crates

* Rename wiggle memory crate to runtime

crates/runtime/src/error.rs

@@ -0,0 +1,28 @@
+use crate::Region;
+use thiserror::Error;
+
+#[derive(Debug, Error, PartialEq, Eq)]
+pub enum GuestError {
+    #[error("Invalid enum value {0}")]
+    InvalidEnumValue(&'static str),
+    #[error("Pointer out of bounds: {0:?}")]
+    PtrOutOfBounds(Region),
+    #[error("Pointer not aligned to {1}: {0:?}")]
+    PtrNotAligned(Region, u32),
+    #[error("Pointer already borrowed: {0:?}")]
+    PtrBorrowed(Region),
+    #[error("In func {funcname}:{location}:")]
+    InFunc {
+        funcname: &'static str,
+        location: &'static str,
+        #[source]
+        err: Box<GuestError>,
+    },
+    #[error("In data {typename}.{field}:")]
+    InDataField {
+        typename: String,
+        field: String,
+        #[source]
+        err: Box<GuestError>,
+    },
+}