SwiftNIO 2.58.0

SemVer Minor

• Add support for using EventLoops as custom actor executor (#2388)
• Add new EventLoop singletons (#2471)
• Add bootstrap APIs for VSOCK sockets (#2479)

SemVer Patch

• Fix huge compile time of setUUIDBytes (#2482, patch credit to @sidepelican)
• Get Android building again after #2479 (#2490, patch credit to @finagolfin)
• Make System.coreCount aware of cgroup2 (#2394)
• Don't lose or delay writes before channelActive (#2486)

SPI(AsyncChannel) changes

• Rename the waitForFinalResult() methods and provide an ELF convenience (#2483)
• Add testing interfaces for the stream and writer of the NIOAsyncChannel (#2488)
• Provide throwing finish method on test stream (#2493)
• Fix leaked promise in NIOTypedApplicationProtocolNegotiationHandler (#2489)
• Add async TCP echo example (#2463)
• Avoid using deinit to fulfil the protocol negotiation promise (#2497)

Other Changes

• Correct malformed codelink (#2484, patch credit to @tayloraswift)
• Update contributor email address (#2481)
• Fix 5.9 and nightly allocation limits (#2485) (#2487)