Squashed 'external/devlib/' changes from a237603ad..ab193ed41

ab193ed41 utils/asyn: Ensure the async generators inside context managers are fully consumed on a single event loop
b2c7bb9b0 utils/asyn: Replace nest_asyncio with greenlet
5ff1d543a Revert "utils/asyn: Replace nest_asyncio with greenback"
4cf7d1856 utils/asyn: Replace nest_asyncio with greenback
03521493d utils/asyn: Factor out the calls to asyncio.run
5aa850ec9 target: Allow reuse of a connection once the owning thread is terminated
a9a2d75c4 tests: Add tests for nested async support
de84a08bf tools/docker: Fixup test config file name
b7d7b4662 tools/setup_host.sh: Rename install_base.sh to setup_host.sh
b48548485 tools/android: Make install_base.sh modular for LISA integration
d8a09e895 tools/android: Remove emulator skins
1c52f13e5 tools/android: Clone install_android_platform_tools() from LISA
14905fb51 tools/android: Make cleanups in install_base.sh
REVERT: a237603ad utils/asyn: Ensure the async generators inside context managers are fully consumed on a single event loop
REVERT: 2e787f5d7 utils/asyn: Replace nest_asyncio with greenlet
REVERT: ea42b630a Revert "utils/asyn: Replace nest_asyncio with greenback"
REVERT: 574f473b3 utils/asyn: Replace nest_asyncio with greenback
REVERT: f10acd90e utils/asyn: Factor out the calls to asyncio.run
REVERT: 933a2f401 target: Allow reuse of a connection once the owning thread is terminated
REVERT: 7eecb0332 tests: Add tests for nested async support

git-subtree-dir: external/devlib
git-subtree-split: ab193ed41d33a07adb66d001bd51353e7b36bd5e