append zipseqarchv script and batches

UnzipSeqArchv.bat

@@ -0,0 +1,24 @@
+@echo off
+setlocal
+
+set "REPO_ROOT=%~dp0"
+set "PY_SCRIPT=A:\1 Amazon_Active_Projects\3 ProjectStructure\zip_sequences.py"
+
+pushd "%REPO_ROOT%" >nul 2>&1
+
+if not exist "%PY_SCRIPT%" (
+    echo Missing %PY_SCRIPT%
+    popd >nul 2>&1
+    exit /b 1
+)
+
+python "%PY_SCRIPT%" --mode expand --verbose %*
+set "ERR=%ERRORLEVEL%"
+
+if not "%ERR%"=="0" (
+    echo Failed to expand render sequence archives (exit code %ERR%).
+)
+
+popd >nul 2>&1
+exit /b %ERR%
+