ci: update spelling allowlists/dictionaries (#5124)

This is just some minor whitelisting/additions to dictionaries to catch
up between when the spell checker PR was written and when it was finally
merged.

This is basically taking the spelling output from
499f24a29e and putting it into files.

The choice of files is arbitrary. I'm adding a `math.txt` dictionary
because it's a reasonable example.

The goal here is to get master to a green check mark

## Validation

When I pushed this commit to my fork, the spell check action ran and
gave me a check mark: https://github.com/jsoref/terminal/runs/534783276

.github/actions/spell-check/dictionary/math.txt

@@ -0,0 +1,2 @@
+powf
+sqrtf

.github/actions/spell-check/dictionary/microsoft.txt

@@ -3,4 +3,5 @@ microsoft
 microsoftonline
 osgvsowi
 powershell
+tdbuildteamid
 visualstudio

.github/actions/spell-check/dictionary/names.txt

@@ -17,6 +17,7 @@ Illhardt
 jantari
 jerrysh
 Kaiyu
+kimwalisch
 KMehrain
 Kourosh
 kowalczyk
@@ -45,7 +46,9 @@ Somuah
 sonph
 sonpham
 stakx
+Walisch
 Wirt
+Wojciech
 zadjii
 Zamor
 Zoey

.github/actions/spell-check/whitelist/whitelist.txt

@@ -291,6 +291,7 @@ Clcompile
 CLE
 cleartype
 CLICKACTIVE
+clickdown
 climits
 clipbrd
 CLIPCHILDREN
@@ -595,6 +596,7 @@ deff
 DEFFACE
 defing
 DEFPUSHBUTTON
+defterm
 DELAYLOAD
 deletable
 DELETEONRELEASE
@@ -1143,10 +1145,12 @@ INITDIALOG
 initguid
 INITMENU
 inl
+INLINEPREFIX
 Inlines
 INotify
 inout
 INPATHROOT
+Inplace
 inproc
 inputdev
 Inputkeyinfo
@@ -1282,6 +1286,7 @@ LEFTALIGN
 LEFTSHIFT
 len
 lhs
+libpopcnt
 LIMITTEXT
 LINEDOWN
 LINESELECTION
@@ -1486,6 +1491,7 @@ msixbundle
 msrc
 msvcrt
 MSVS
+msys
 msysgit
 mui
 Mul
@@ -1781,6 +1787,7 @@ pid
 pidl
 PIDLIST
 pii
+pinam
 pinvoke
 pipename
 pipestr
@@ -2206,6 +2213,8 @@ SOLIDBOX
 Solutiondir
 somefile
 sourced
+SOURCESDIRECTORY
+SPACEBAR
 spammy
 spand
 Spc