feat: mpe_submit docs

docs/tables/mpe_datacatalog_libs.md

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+---
+layout: article
+title: MPE_DATACATALOG_LIBS
+description: The MPE_DATACATALOG_LIBS table catalogs library attributes such as engine, paths, permissions, owners & schemas
+---
+
+# MPE_DATACATALOG_LIBS
+
+The `MPE_DATACATALOG_LIBS` table catalogs library attributes such as engine, paths, permissions, owners & schemas.
+
+More frequently changing attributes (such as size and number of tables) are stored in [MPE_DATASTATUS_LIBS](/mpe_datastatus_libs).
+
+To ignore additional librefs, or to trigger a scan, see the Refresh Data Catalog [instructions](https://docs.datacontroller.io/admin-services/#refresh-data-catalog).
+
+## Columns
+
+ - `TX_FROM num`: SCD2 open datetime 
+ - 🔑 `TX_TO num`: SCD2 close datetime
+ - 🔑 `LIBREF char(8)`: SAS Libref (8 chars)
+ - `ENGINE char(32)`: The engine used to connect to the library
+ - `LIBNAME char(256)`: The Library Name (from metadata if SAS 9)
+ - `PATHS char(8192)`: The directories used (BASE engine only)
+ - `PERMS char(500)`: The directory permissions (BASE engine only)
+ - `OWNERS char(500)`: The directory owners (BASE engine only)
+ - `SCHEMAS char(500)`: The library schema (DB engines)
+ - `LIBID char(17)`: The Library Id (from metadata if SAS 9)
+
+
+