Optimise DependencyModule.resolveDependencies

[lemnik]

Goal

Improve Bugsnag startup performance by optimising DependencyModule.resolveDependencies

Design

Removed future

The future property delegate had two undesirable impacts:

1. The delegate object itself had several allocations that were only used during startup (the delegate itself, the construction Function, and a wrapper for the construction Function)
2. Before the DependencyModule objects could be allocated there was a reflection overhead brought about by the KProperty objects

Removed the use of Future.get

DependencyModule.resolveDependencies always waited for its background task to complete before returning. This PR moves the waiting to the first references of the values, by hiding the properties behind a resolveValueOf function which will wait (if required) for the background task to complete.

Testing

Relied on existing tests

[bugsnagbot]

Android notifier sizes

Format	Size impact of Bugsnag (kB)	Size impact of Bugsnag when Minified (kB)
APK	0.0	0.0
arm64_v8a	0.0	0.0
armeabi_v7a	0.0	0.0
x86	0.0	0.0
x86_64	0.0	0.0

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