Made all sub-routines in init.bat importable libs (#1706)

vendor/lib/lib_base.cmd

@@ -0,0 +1,48 @@
+@echo off
+
+set lib_base=call "%~dp0lib_base.cmd"
+
+if "%~1" == "/h" (
+    %lib_base% help "%0"
+) else if "%1" neq "" (
+    call :%*
+)
+
+exit /b
+
+:help
+:::===============================================================================
+:::show_subs - shows all sub routines in a .bat/.cmd file with documentation
+:::.
+:::include:
+:::.
+:::       call "$0"
+:::.
+:::usage:
+:::.
+:::       %lib_base% show_subs "file"
+:::.
+:::options:
+:::.
+:::       file <in> full path to file containing lib_routines to display
+:::.
+:::-------------------------------------------------------------------------------
+
+    for /f "tokens=* delims=:" %%a in ('type "%~1" ^| findstr /i /r "^:::"') do (
+        rem echo a="%%a"
+
+        if "%%a"==" " (
+            echo.
+        if "%%a"=="." (
+            echo.
+        ) else if /i "%%a" == "usage" (
+            echo %%a:
+        ) else if /i "%%a" == "options" (
+            echo %%a:
+        ) else if not "%%a" == "" (
+            echo %%a
+        )
+    )
+
+    pause
+    exit /b