bpo-40280: clean and ignore .wasm files (GH-29794)

Author: tiran

.gitignore

@@ -10,6 +10,7 @@
 *.so.*
 *.dylib
 *.dll
+*.wasm
 *.orig
 *.pyc
 *.pyd

Makefile.pre.in

@@ -2284,6 +2284,7 @@ clean-retain-profile: pycremoval
 	find . -name '*.[oa]' -exec rm -f {} ';'
 	find . -name '*.s[ol]' -exec rm -f {} ';'
 	find . -name '*.so.[0-9]*.[0-9]*' -exec rm -f {} ';'
+	find . -name '*.wasm' -exec rm -f {} ';'
 	find . -name '*.lst' -exec rm -f {} ';'
 	find build -name 'fficonfig.h' -exec rm -f {} ';' || true
 	find build -name '*.py' -exec rm -f {} ';' || true