Implemented: Manufacturing demo data component with demo map (OFBIZ-13438)

[patelanil]

This adds a new, self-contained Manufacturing + MRP demo/reference component,
manufacturing-demo, to ofbiz-plugins.

Jira: https://issues.apache.org/jira/browse/OFBIZ-13438

What it adds

A loadable component that stands up a skateboard-factory manufacturing configuration on
stock entities only, via its own manufacturingDemo data reader. It is self-contained —
it brings its own company, a focused manufacturing-capable admin login, and all the
manufacturing data — so it loads on seed + seed-initial without the stock demo
data set:

./gradlew "ofbiz --load-data readers=seed,seed-initial,manufacturingDemo"

This issue (slice 1) is the standing manufacturing configuration:

• Company organization (tagged MANUFACTURER) and a focused FULLADMIN admin login
  (granted only OFBTOOLS_VIEW, CATALOG_VIEW, MANUFACTURING_*, and the
  WORKEFFORTMGR_ADMIN / ASSETMAINT_ADMIN that production runs require)
• production plant facility MFG_PLANT
• 9 products correctly typed (finished good / sub-assembly / raw materials)
• a two-tier bill of materials
• two machines (AMC, LAM) with work calendars
• routings and operations
• supplier and supplier-product (purchasing) records
• a manifest.yaml mapping the demo's entities and IDs

No transactional data (inventory, sales forecasts, MRP runs, costing rates) is included in
this issue; those are planned follow-ups that build the full MRP -> production-run ->
actual-cost walkthrough on top of this configuration.

Attribution

The scenario and manufacturing data are based on the published Apache OFBiz manufacturing
how-to series by Swapnil Shah. The company/login bootstrap rows are copied (with attribution
in code comments) from OFBiz's own AccountingDemoData.xml and security demo files.

Verification

Loaded on a clean H2 database with readers=seed,seed-initial,manufacturingDemo (no stock
demo): 99 values, 0 errors. Logged in to the Manufacturing application as admin, viewed
the two-tier BOM and routings, and created a standalone production run for the deck — OFBiz
generated the routing operation and the BOM component requirements (status PRUN_CREATED).

[sonarqubecloud]

Quality Gate failed

Failed conditions
C Security Rating on New Code (required ≥ A)

See analysis details on SonarQube Cloud

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