[chip-tool] Add documentation for chiptool default timeout

[isiu-apple]

Problem

Chiptool has a default timeout which causes a timeout crash if the chiptool command run is not completed within the timeframe set by this default timeout. This behavior is currently not documented.

For example:

out/apps/chip-tool/chip-tool otasoftwareupdaterequestor subscribe-event state-transition 5 10 0x1234567890 0

[1650992689511] [32397:1415601] CHIP: [TOO] Run command failure: ../../../examples/chip-tool/commands/common/CHIPCommand.cpp:392: CHIP Error 0x00000032: Timeout
zsh: segmentation fault  out/apps/chip-tool/chip-tool otasoftwareupdaterequestor subscribe-event  5 10

Proposed Solution

Document this timeout behavior and also document the suggestion that chiptool event subscriptions should be run in interactive mode to avoid this timeout behavior.