pw_cli: Avoid NamedTuple multiple inheritance
pw_cli: Avoid NamedTuple multiple inheritance

Multiple inheritance with NamedTuple is not supported in Python 3.9. Use
@dataclass instead.

Change-Id: I190396b39a2c177b1b918a879e3fef309e6a55b4
Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/40062
Pigweed-Auto-Submit: Wyatt Hepler <cca3bedb37979eacd157a9bceb473582df8aea1e@google.com>
Commit-Queue: Auto-Submit <14637eda5603879df170705285bf30f5996692f0@pigweed.google.com.iam.gserviceaccount.com>
Reviewed-by: Joe Ethier <f5eb8cb2f5310c7fa9df6f16eabccb4436f47999@google.com>

google/pigweed,google/pigweed,google/pigweed,google/pigweed,google/pigweed,google/pigweed,google/pigweed,google/pigweed,google/pigweed,google/pigweed