CmdPal: Port the devhome perf widgets to cmdpal (#45217)

Pretty direct port of the code, to prove it works.

There's definitely some improvement to be made here, esp WRT to the
network and GPU listing - networks should all just be listed. Or at
least automatically track the active one. And GPU should aggregate a
bunch of stats.

And we can probably add the details to these list items.

But most importantly, _it works_.

re: #45201

.github/actions/spell-check/allow/code.txt

@@ -38,6 +38,7 @@ Gbps
 gcode
 Heatshrink
 Mbits
+Kbits
 MBs
 mkv
 msix
@@ -97,6 +98,7 @@ Yubico
 Perplexity
 Groq
 svgl
+devhome
 
 # KEYS
 
@@ -322,6 +324,7 @@ REGSTR
 
 # Misc Win32 APIs and PInvokes
 INVOKEIDLIST
+MEMORYSTATUSEX
 
 # PowerRename metadata pattern abbreviations (used in tests and regex patterns)
 DDDD
@@ -342,3 +345,7 @@ reportbug
 #ffmpeg
 crf
 nostdin
+
+# Performance counter keys
+engtype
+Nonpaged