Squashed 'external/devlib/' changes from c30eb537b..a237603ad

a237603ad utils/asyn: Ensure the async generators inside context managers are fully consumed on a single event loop
2e787f5d7 utils/asyn: Replace nest_asyncio with greenlet
ea42b630a Revert "utils/asyn: Replace nest_asyncio with greenback"
574f473b3 utils/asyn: Replace nest_asyncio with greenback
f10acd90e utils/asyn: Factor out the calls to asyncio.run
933a2f401 target: Allow reuse of a connection once the owning thread is terminated
7eecb0332 tests: Add tests for nested async support
d3ca49f24 utils/misc: Fix AttributeError in tls_property
REVERT: c30eb537b utils/asyn: Ensure the async generators inside context managers are fully consumed on a single event loop
REVERT: 277e0fcfb utils/asyn: Replace nest_asyncio with greenlet
REVERT: 103748b9c Revert "utils/asyn: Replace nest_asyncio with greenback"
REVERT: bf16f34bd utils/asyn: Replace nest_asyncio with greenback
REVERT: 83f25393e utils/asyn: Factor out the calls to asyncio.run
REVERT: 00a8e9b05 target: Allow reuse of a connection once the owning thread is terminated
REVERT: c86853d3c tests: Add tests for nested async support

git-subtree-dir: external/devlib
git-subtree-split: a237603adf08666dadbc60d1800983653fb6ab7a