pw_cli: Add quotes around user-provided values
pw_cli: Add quotes around user-provided values

Change-Id: Ifc5fafeefef0dea65cb3aba90b985e6be31fa0bd
Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/81980
Reviewed-by: Joe Ethier <f5eb8cb2f5310c7fa9df6f16eabccb4436f47999@google.com>
Commit-Queue: RJ Ascani <4734195edb8e393f72741de86b813743e1460cb1@google.com>

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