v4: move apf_interpreter.{h,c} into v4 subdirectory

The following commit will add symlinks from the current location to the new,
not including that here, as it prevents this change from being viewed by
git as a simple file move...

Note that apf_interpreter.c hasn't changed in years (though there are
a pair of tracing related changes since the original Android P release),
while the apf_interpreter.h file only had a single commit converting
some non-breaking spaces to normal ones.

apf_interpreter.h was at:
  commit 3210e4e49222e391d738b5a713bd93c5ab0f5900
  Author: Maciej Żenczykowski <maze@google.com>
  Date:   Thu Dec 21 01:18:56 2023 -0800
  'apf_interpreter.h: convert hard (non-breaking) spaces to normal ascii spaces'

  $ git log --oneline apf_interpreter.h
  3210e4e apf_interpreter.h: convert hard (non-breaking) spaces to normal ascii spaces
  17c1fbc (android-p-preview-2) apf: Tweak the interpreter data addressing scheme

apf_interpreter.c was at:
  commit 983eb51423383190f80d31ed32fa38a112f5c04d
  Author: Lorenzo Colitti <lorenzo@google.com>
  Date:   Thu Sep 26 22:14:16 2019 +0900
  'Print disassembled code in apf_run.'

  $ git log --oneline apf_interpreter.c
  983eb51 Print disassembled code in apf_run.
  d0174a6 Add basic execution tracing support to apf_run
  17c1fbc (android-p-preview-2) apf: Tweak the interpreter data addressing scheme

Test: TreeHugger, with follow up.
Signed-off-by: Maciej Żenczykowski <maze@google.com>
Change-Id: I5ec6b73c49efdb8a5ac555ba56c408ba83312996

2 files changed, 0 insertions, 0 deletions

diff --git a/apf_interpreter.c b/v4/apf_interpreter.c
index c04a6e5..c04a6e5 100644
--- a/apf_interpreter.c
+++ b/v4/apf_interpreter.c
diff --git a/apf_interpreter.h b/v4/apf_interpreter.h
index 1c8e7c9..1c8e7c9 100644
--- a/apf_interpreter.h
+++ b/v4/apf_interpreter.h