Added ARM32 support

cmake/HotReload.cmake

@@ -17,7 +17,10 @@
 # branch protection) plus a 16-byte jump sequence = 20 bytes; x86-64's
 # is a 4-byte ENDBR64 landing pad (on by default on some toolchains --
 # see Architecture.cpp's file comment) plus its 14-byte jump = 18;
-# plain x86 needs at most 4 + 5 = 9. 32 leaves headroom over the
+# plain x86 needs at most 4 + 5 = 9; ARM32 has no landing pad but, in
+# its Thumb state specifically, can need one realigning NOP in front
+# of its 8-byte jump = 10 (see Architecture.cpp's ARM32 file comment).
+# 32 leaves headroom over the
 # largest of those without meaningfully affecting code size -- this is
 # NOP padding, skipped in a few cycles by the branch predictor on
 # every call until a function is actually reloaded.