feat: adding all tables to the docs

docs/tables/mpe_loads.md

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+---
+layout: article
+title: MPE_LOADS
+description: The MPE_LOADS table records the status of CSV file loads performed by the Data Controller for SAS® target loader.
+---
+
+# MPE_LOADS
+
+The `MPE_LOADS` table tracks the status of CSV file loads processed by the target loader ([mpe_targetloader](/macros/) macro), including failures and their reasons.
+
+## Columns
+
+ - 🔑 `CSV_DIR char(255)`: The staged folder reference (mperef) containing the CSV files being loaded
+ - `USER_NM char(50)`: The user who submitted the load
+ - `STATUS char(15)`: The status of the load (e.g. IN PROGRESS, SUCCESS, FAILED)
+ - `DURATION num`: Duration of the load (seconds)
+ - `PROCESSED_DTTM num`: Datetime the load was processed
+ - `REASON_TXT char(2048)`: The reason for failure (where applicable)
+ - `APPROVALS char(64)`: Approval information for the load