[im] Follow-ups after landing interaction model protocol

[erjiaqing]

Problem

Issues in #7634

• Invalid string value (string value with size=0xFF / 0xFFFF) in response ([im] Land ReadAttribute using Interaction Model protocol #7634 (comment))

• Data buffer to numeric types convert ([im] Land ReadAttribute using Interaction Model protocol #7634 (comment))

• Extract common functions in CHIPClientCallbacks.cpp ([im] Land ReadAttribute using Interaction Model protocol #7634 (comment))

• Store callback functions in ReadClient etc. ([im] Land ReadAttribute using Interaction Model protocol #7634 (comment))

• Functions for getting nodeid in ReadClient / WriteClient / CommandSender ([im] Land ReadAttribute using Interaction Model protocol #7634 (comment))

• Update comments in [im] Land ReadAttribute using Interaction Model protocol #7634 (comment)

• please address [im] Land ReadAttribute using Interaction Model protocol #7634 (comment)
  Clean Ups

• READ_ATTRIBUTES_RESPONSE handling

[erjiaqing]

I believe this issue are resolved by the PRs menthoned above and several changes to IM in Q4 last year. Close it now.