RFR: 8319873: Add windows implementation for jcmd System.map and System.dump_map [v9]

[Simon Tooke]

> This is a port of [JDK-8318636](https://github.com/openjdk/jdk/pull/16301) to Windows.
> 
> System.map and System.dump_map are implemented using the Windows API and provide roughly the same information in the same format.  Most of the heavy lifting was implemented by @tstuefe in #16301 - this PR adds the Windows implementation and enables the common code for Windows 64 bit.
>  
> [Sample output (with NMT enabled)](https://github.com/user-attachments/files/16663332/vm_memory_map_760.txt)

Simon Tooke has updated the pull request incrementally with two additional commits since the last revision:

 - prevent VM crash on invalid jcmd
 - changes from review

-------------

Changes:
  - all: https://git.openjdk.org/jdk/pull/20597/files
  - new: https://git.openjdk.org/jdk/pull/20597/files/fa0b46ce..56860827

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=20597&range=08
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=20597&range=07-08

  Stats: 7 lines in 3 files changed: 4 ins; 0 del; 3 mod
  Patch: https://git.openjdk.org/jdk/pull/20597.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/20597/head:pull/20597

PR: https://git.openjdk.org/jdk/pull/20597