Missing instruction to install JARs from <PRODUCT_HOME>/lib directory to local m2 repository

[AmilaSamith]

Affected OB version:

OB 3.0.0

Affected OB specifications:

All

Existing pages to be updated:

https://ob.docs.wso2.com/en/latest/develop/developer-guide/#add-jar-files-to-maven-repository

Description (Optional):

Instructions:

References:

Labels:

[DinithiDiaz]

Closing this as completed.