feat(wasm): Add lib to matrix-sdk-ffi target (#5242)

The uniffi tool for generating JS/Wasm bindings utilizes rust as its
intermediate language.

As a result, the 'target' uniffi annotated library needs to be marked as
a 'lib' so that the generated rust code can utilize it to generate the
Wasm create + typescript bindings.

Signed-off-by: Daniel Salinas

Author: zzorba

bindings/matrix-sdk-ffi/Cargo.toml

@@ -14,7 +14,14 @@ publish = false
 release = true
 
 [lib]
-crate-type = ["cdylib", "staticlib"]
+crate-type = [
+  # Needed by uniffi for Android bindings
+  "cdylib",
+  # Needed by uniffi for iOS bindings
+  "staticlib",
+  # Needed by uniffi for JS/Wasm bindings, which use rust as an intermediate language
+  "lib"
+]
 
 [features]
 default = ["bundled-sqlite", "unstable-msc4274"]