[SB Refactor] Update TableLogBuffer based on ABT changes.

1) Add a header and footer so ABT can find the sections.
2) Require certain format from the column names.
3) Remove `dumpTables`, since that's now in ABT.
4) Update WifiNetwork's logging to not use -1 (-1 seemed
   unclear when reading a real bug report).

Bug: 259454430
Test: Dumped BR, uploaded to ABT, and verified that the wifi table log
appeared correctly (with corresponding ABT changes)
Test: atest TableLogBufferTest

Change-Id: I0564b3d0f423adcc3c3164d10fef062c677a0769