Add Windows README and ReleaseNotes

Also fix Help command that broke after some last-minute refactoring, and tweak
interactive EOF handling.

ReleaseNotes-Windows

@@ -0,0 +1,14 @@
+# PlexDBRepair-Windows
+
+Release notes for the Windows counterpart to DBRepair.sh (DBRepair-Windows.ps1)
+
+# Release Info
+
+v1.00.00
+  - Initial Windows PowerShell script release, aiming to provide a similar experience as DBRepair.sh, with command-name-based input.
+  - Initial command support:
+    - AUTO(matic)
+    - EXIT
+    - PRUN(e)
+    - STAR(t)
+    - STOP