[Version bump] chore(release): publish v1.20.0

Bug Fixes

• deps: update all dependencies j:cdx-227 (#529) (74a0d36)
• erase resources folder content before pulling resources (#554) (22b30a2)
• flush analytic events before terminating the process (#549) (b25473c)
• require at least one flag on the config:set command (#545) (4d41930)
• resolve ts/js files for generated atomic project (webpack) (#553) (8b705fe)

Features

• add "create-atomic" package (#536) (1acd626)
• create new @coveo/lambda-functions package (#558) (667749c)
• display config after config:set (#544) (11bad62)
• improve generated @coveo/atomic project (#548) (67e604d)
• make atomic command pass arguments to @coveo/create-atomic (#546) (c03c3f7)