Extract basic string utilities into new petra-string module

• Type: Technical Task
• Status: Closed
• Priority: Minor
• Resolution: Completed
• Affects Version/s: None
• Fix Version/s: 7.0.0 DXP FP33, 7.0.0 DXP FP36, 7.0.0 DXP FP37, 7.0.0 DXP FP40, 7.0.0 DXP SP7, 7.0.5 CE GA6, 7.0.X, 7.1.X, 7.2.X, Master
• Component/s: Core Infrastructure
• Labels:
  • liferay-digital-enterprise-70-sp7
  • liferay-fixpack-de-33-7010
  • liferay-fixpack-de-36-7010
  • liferay-fixpack-de-37-7010
  • liferay-fixpack-de-40-7010
  • liferay-solr5-search-engine-1.0.1
• Branch Version/s:
  7.2.x, 7.1.x, 7.0.x
• Backported to Branch:
  Committed
• Git Pull Request: https://github.com/brianchandotcom/liferay-portal/pull/52227

Extract basic string utilities into new petra-string module.

To be included:

1. CharPool
2. StringBundler
3. StringPool
4. StringUtil: split(..)