Move Pester test/Pester and push to GitHub

.gitmodules

@@ -4,9 +4,9 @@
 [submodule "src/libpsl-native"]
 	path = src/libpsl-native
 	url = https://github.com/PowerShell/psl-native.git
-[submodule "ext-src/pester"]
-	path = ext-src/pester
-	url = https://msostc.visualstudio.com/DefaultCollection/PS/_git/Pester
+[submodule "test/Pester"]
+	path = test/Pester
+	url = https://github.com/PowerShell/psl-pester.git
 	branch = develop
 	ignore = dirty
 [submodule "src/omi-provider"]

build.sh

@@ -7,7 +7,7 @@ mkdir -p $BIN/Modules
 # Deploy PowerShell modules
 (
     cd $BIN/Modules
-    ln -sf ../../ext-src/pester Pester
+    ln -sf ../../test/Pester .
     ln -sf ../../src/monad/monad/miscfiles/modules/Microsoft.PowerShell.Utility .
     OMI=Microsoft.PowerShell.Commands.Omi
     mkdir -p $OMI