runtime/pprof: provide memory mapping info on Windows #43296
Description
Noticed during google/pprof#592.
Currently Windows is missing memory mapping info similarly to Mac (#19790). This doesn't work very well in conjunction with ASLR. This results in addresses that do not match the binary. The workaround is to use -buildmode exe to disable it.
Windows does seem to have VirtualQueryEx to get the necessary information. (https://reverseengineering.stackexchange.com/a/8299). Minimally it would be nice to get the mapping for the main executable.