feat: make connectTimeoutMs configurable

[dayaffe]

Expose connectTimeoutMs so that it is configurable on the client.

Issue #

#1065
#1152

Description of changes

Ex. Usage

// I set timeout to 15_000 as an example but this could be any UInt32 number
let httpClientConfiguration = HttpClientConfiguration()
let crtEngine = CRTClientEngine(CRTClientEngineConfig(connectTimeoutMs: 15_000))
let httpClient = SdkHttpClient(engine: crtEngine, config: httpClientConfiguration)

Scope

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)

By submitting this pull request, I confirm that my contribution is made under the terms of the Apache 2.0 license.

[sichanyoo]

Lgtm

[jbelkins]

This exposes the timeout setting on the CRT HTTP client, but can this setting be accessed when creating an AWS service client?