Fix Berry Memory leak in import re

[s-hadinger]

Description:

Implement proper memory management in import re for re.search() and re.match(). Pre-compiled pattern have no memory leak.

Add exception if memory allocation fails (instead of crashing)

Checklist:

• The pull request is done against the latest development branch
• Only relevant files were touched
• Only one feature/fix was added per PR and the code change compiles without warnings
• The code change is tested and works with Tasmota core ESP8266 V.2.7.6
• The code change is tested and works with Tasmota core ESP32 V.2.0.14
• I accept the CLA.

NOTE: The code change must pass CI tests. Your PR cannot be merged unless tests pass