Add python filecheck package

Used for lit tests

Change-Id: Iafbf47898af71afe3b373086d2fcd8f3ffe92783

python-requirements.txt

diff --git a/python-requirements.txt b/python-requirements.txt
index 95882a4..57848da 100644
--- a/python-requirements.txt
+++ b/python-requirements.txt
@@ -25,6 +25,7 @@
 # Flatbuffers for TBM trace data
 flatbuffers==23.5.26
 
+filecheck
 hjson
 jsonschema
 lit