fix(ci): inline wasm-bindings license to unblock wasm-pack manifest parse (#687)

wasm-pack reads `rust/wasm-bindings/Cargo.toml` with its own Serde
struct (`license: Option<String>`) before delegating to Cargo, so it
fails to deserialize `license.workspace = true` (a TOML map) with:

  invalid type: map, expected a string for key `package.license`

(See wasm-bindgen/wasm-pack#1359 — wasm-pack's manifest parser never fully
supported the workspace-inheritance form for this field.)

CI installs wasm-pack via `jetli/wasm-pack-action@v0.4.0` with
`version: latest`, and a recent release now consistently trips this
parser, leaving `main` red on the Build WASM step. Inline the
`MPL-2.0` string in the wasm-bindings crate so wasm-pack can parse
the manifest regardless of which release `latest` resolves to.

The other workspace crates keep `license.workspace = true` — only
the wasm-bindings crate is consumed by wasm-pack's own parser.

Author: louistrue

rust/wasm-bindings/Cargo.toml

@@ -3,7 +3,7 @@ name = "ifc-lite-wasm"
 version.workspace = true
 edition.workspace = true
 authors.workspace = true
-license.workspace = true
+license = "MPL-2.0"
 repository.workspace = true
 description = "WebAssembly bindings for IFC-Lite"
 keywords = ["ifc", "bim", "wasm", "webassembly", "aec"]