feat(cpp): add map type support #3879

Job	Run time
Verify MSRV	1m 0s
clippy	56s
Crate Unit Tests	2m 39s
Test Async (allowed to fail)	2m 44s
Rustfmt	14s
Check	2m 36s
verify-publish	2m 42s
Build wit-bindgen (x86_64-windows, windows-latest, x86_64-pc-windows-msvc, -Ctarget-feature=+crt-...	5m 38s
Build wit-bindgen (aarch64-macos, macos-latest, aarch64-apple-darwin, 10.12)	3m 42s
Build wit-bindgen (riscv64gc-linux, ubuntu-latest, riscv64gc-unknown-linux-gnu, ./ci/docker/riscv...	2m 38s
Build wit-bindgen (aarch64-linux, ubuntu-latest, aarch64-unknown-linux-gnu, ./ci/docker/aarch64-l...	2m 54s
Build wit-bindgen (x86_64-linux, ubuntu-latest, x86_64-unknown-linux-gnu, ./ci/docker/x86_64-linu...	2m 50s
Build wit-bindgen (x86_64-macos, macos-latest, x86_64-apple-darwin, 10.12)	2m 57s
Build wit-bindgen (aarch64-windows, windows-11-arm, aarch64-pc-windows-msvc, -Ctarget-feature=+cr...	3m 23s
Test (ubuntu-latest, cpp)	3m 22s
Test (macos-latest, rust)	3m 8s
Test (macos-latest, go)	3m 52s
Test (windows-latest, csharp)	16m 21s
Test (macos-latest, c)	2m 55s
Test (windows-latest, cpp)	5m 22s
Test (windows-latest, c)	4m 17s
Test (macos-latest, cpp)	2m 57s
Test (ubuntu-latest, csharp)	12m 2s
Test (ubuntu-latest, go)	3m 59s
Test (ubuntu-latest, c)	2m 8s
Test (windows-latest, rust)	7m 3s
Test (windows-latest, go)	8m 14s
Test (ubuntu-latest, rust)	3m 0s
Record the result of testing and building steps	3s
	1h 55m 36s

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