feat: support compiling to webassembly (#2254)

* feat(aws-config): define default feature for sso

* chore(aws): disable unused features

* chore(rust-runtime): disable unused features

* chore: add missing tokio fs feature

* chore: disable spawn blocking on wasm

* chore: fix sso feature

* chore: allow unused variables when not sso

* chore: remove unnecessary dependency filter for wasm

* chore: add integration test for wasm

* chore: ensure test-util feature is applied to dev dependencies

* chore: disable retry config

Co-authored-by: John DiSanti <johndisanti@gmail.com>

* chore: simplify features as suggested

* chore: no default features for aws types

* chore: rename credentials-sso feature

* Revert "chore: simplify features as suggested"

This reverts commit d8fcf4912f4f169bc1a4edc37799508272c132a2.

* chore: set right name in default features

* chore: create smithy client test util in runtime types

* Update aws/rust-runtime/aws-types/Cargo.toml

Co-authored-by: John DiSanti <johndisanti@gmail.com>

* Update aws/rust-runtime/aws-inlineable/Cargo.toml

Co-authored-by: John DiSanti <johndisanti@gmail.com>

* Update aws/rust-runtime/aws-config/src/profile/credentials/exec.rs

Co-authored-by: John DiSanti <johndisanti@gmail.com>

* Update aws/rust-runtime/aws-config/src/profile/credentials/exec.rs

Co-authored-by: John DiSanti <johndisanti@gmail.com>

* Update aws/rust-runtime/aws-config/src/profile/credentials/exec.rs

Co-authored-by: John DiSanti <johndisanti@gmail.com>

* Update aws/rust-runtime/aws-config/src/lib.rs

Co-authored-by: John DiSanti <johndisanti@gmail.com>

* chore: use hardcoded credentials feature

* chore: make wasm example for s3 instead

* chore: fix formatting

* chore: fix kotlin formatting

* chore: fix kotlin unit tests

* chore: use timeout config from smithy types

* chore: move tests into main file

* chore: add vscode setttings to target wasi by default

* chore: fix test-util feature for smithy client

* chore: separate adapter into own module

* chore: fix test with no default features

* Fix typo

* Update changelog

* Check compilation of `aws-config` against `wasm32` in CI

* Fix Dockerfile issue and use correct cargo-wasi command

* Small Dockerfile fix

* Add missing `tar` binary to Docker image

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Co-authored-by: Eduardo Rodrigues <eduardomourar@users.noreply.github.com>
Co-authored-by: John DiSanti <johndisanti@gmail.com>
Co-authored-by: John DiSanti <jdisanti@amazon.com>
Co-authored-by: Russell Cohen <rcoh@amazon.com>