DATA-4295: SDK/CLI changes to support ExportTabularData and GetLatestTabularData

[Emerald-Z]

Changes include:

Testing:
Manual Testing for CLI Export Change

example query

go run . data export tabular --part-id "3380647d-127a-4fb8-aa7e-253ef7dbccc7" --resource-name "sensor-1" --resource-subtype "rdk:component:sensor" --method "DoCommand" --destination "/Users/emerald.zhang/Downloads" --additional-params '{"docommand_input": {"foo": "bar"}}'

• verified that data returned only contains the correct additional params
• verified that invalid additional params return nothing (consistent with app-side change)
• verified that no additional params exports all data

Testing for Golang SDK Changes

• updated local tests
• wrote a testing script to test the SDK functions with fake data
• verified that all behavior is consistent with this PR
  (if interested I can attach the test script)