[datalog] Move DataLogReaderThread from glass to new libdatalog

[DeltaDizzy]

Currently the major DataLog backend API (reading and writing) is split between wpiutil and glass. In the interest of allowing code that wants to use these APIs to not need to link to glass and declutter wpiutil, all of those APIs are moved to a new library named "libdatalog".

[KangarooKoala]

Try doing git rebase -i 2027 and replacing pick with drop for the commits not in this PR.

If that doesn't work, try git reset --hard 92897bbc7156ece6d2433c2ecec6d3bc66bd6a9d (to reset to before the rebase) and then git rebase --onto 2027 HEAD main (to rebase while excluding the commits to main that aren't in 2027).

[Gold856]

To fix the Gradle build, everything that links to ntcore also needs to have libdatalog added as a dependency as well. Adding a line to the addNtcoreDependency function (and the jni variant) to link to libdatalog is probably the easiest way to do that.