ASoA: Fix includes

[vkucera]

TBufferFile.h is needed by DECLARE_SOA_CCDB_COLUMN_FULL.
That's why Common/DataModel/GloCCDBObjects.h in O2Physics currently cannot be compiled.

[ktf]

The "fix" is wrong. As usual one should not blindly run IWYU, but do a proper review of the headers. For example, StringHelpers.h should probably export string and string_view.

[ktf]

Also, I am not sure this is actually the highest priority we have, if at all.

[vkucera]

The "fix" is wrong. As usual one should not blindly run IWYU, but do a proper review of the headers. For example, StringHelpers.h should probably export string and string_view.

What exactly is wrong?

[vkucera]

Also, I am not sure this is actually the highest priority we have, if at all.

The header does not compile which prevents other headers that include it from compiling too. I would say it's quite important.

[ktf]

Log, please.

[ktf]

"wrong" as in "pollutes ASoA.h with unneeded include statements which should be considered exported by other headers. See the StringHelpers.h example".

[vkucera]

"wrong" as in "pollutes ASoA.h with unneeded include statements which should be considered exported by other headers. See the StringHelpers.h example".

OK. How about just adding TBufferFile.h for now?