Move TableLogBuffer into its own DumpManager collection

Moving TableLogBuffer out of the `dumpable` collection and into its own
individually-addressable space allows us to implement more type-specific
features using the SystemUI cli

Test: DumpManagerTest
Test: DumpHandlerTest
Test: <dump invocation> tables
Test: <dump invocation> tables --list
Test: <dump invocation> dump-normal | grep <any table log>
Bug: 278094048
(cherry picked from https://googleplex-android-review.googlesource.com/q/commit:c455e14e48147472f7db273cfe4d25afd60b40ae)
Merged-In: I0fd9cab64ed9320a25546e2842b6aaf625f129a1
Change-Id: I0fd9cab64ed9320a25546e2842b6aaf625f129a1