CmdPal: Removing Core projects (#45693)

Functionally, no differences.

- Removed Core projects.
- Core.Common => Microsoft.CmdPal.Common
- Core.ViewModels => Microsoft.CmdPal.UI.ViewModels

---------

Co-authored-by: Jiří Polášek <me@jiripolasek.com>

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

@@ -110,8 +110,8 @@
 ^src/modules/cmdpal/doc/initial-sdk-spec/list-elements-mock-002\.pdn$
 ^src/modules/cmdpal/ext/SamplePagesExtension/Pages/SampleMarkdownImagesPage\.cs$
 ^src/modules/cmdpal/Microsoft\.CmdPal\.UI/Settings/InternalPage\.SampleData\.cs$
-^src/modules/cmdpal/Tests/Microsoft\.CmdPal\.Core\.Common\.UnitTests/.*\.TestData\.cs$
-^src/modules/cmdpal/Tests/Microsoft\.CmdPal\.Core\.Common\.UnitTests/Text/.*\.cs$
+^src/modules/cmdpal/Tests/Microsoft\.CmdPal\.Common\.UnitTests/.*\.TestData\.cs$
+^src/modules/cmdpal/Tests/Microsoft\.CmdPal\.Common\.UnitTests/Text/.*\.cs$
 ^src/modules/colorPicker/ColorPickerUI/Shaders/GridShader\.cso$
 ^src/modules/launcher/Plugins/Microsoft\.PowerToys\.Run\.Plugin\.TimeDate/Properties/
 ^src/modules/MouseUtils/MouseJumpUI/MainForm\.resx$

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

@@ -845,6 +845,7 @@ MOUSEINPUT
 MOVESIZEEND
 MOVESIZESTART
 MRM
+MRT
 mru
 msc
 mscorlib
@@ -2037,7 +2038,6 @@ mousehighlighter
 mousejump
 mousepointer
 mouseutils
-mrt
 MSAL
 msdia
 MSIs