build: Migrate to Go Native fuzz and improve reliability

Establish conventions which aligns with what is supported upstream
today, whilst expanding on documentation to ensure folks have
pointers on how to debug/check for issues going forwards.

Signed-off-by: Paulo Gomes <[email protected]>

Author: Paulo Gomes

Makefile

@@ -138,7 +138,6 @@ tidy:  ## Run go mod tidy
 fmt:  ## Run go fmt against code
 	go fmt ./...
 	cd api; go fmt ./...
-	cd tests/fuzz; go fmt .
 
 vet: $(LIBGIT2)	## Run go vet against code
 	go vet ./...