clang-tidy: Enable bugprone-string-literal-with-embedded-nul check

This check finds occurrences of string literal with embedded NUL
character and validates their usage.
The check is ignored on the line because the test case has a
requirement to verify if the NUL terminator is removed or not
by the method.

Change-Id: I919bfed7d9c0b3a43933621bda32cd31c876ff02
Signed-off-by: Pavithra Barithaya <pavithrabarithaya07@gmail.com>
diff --git a/.clang-tidy b/.clang-tidy
index f2e1a72..5b44e8d 100644
--- a/.clang-tidy
+++ b/.clang-tidy
@@ -32,6 +32,7 @@
 bugprone-sizeof-expression,
 bugprone-spuriously-wake-up-functions,
 bugprone-string-integer-assignment,
+bugprone-string-literal-with-embedded-nul,
 bugprone-suspicious-enum-usage,
 bugprone-suspicious-include,
 bugprone-suspicious-memset-usage,