Berry add load/save

[s-hadinger]

Description:

Berry improvements:

• fix in handling CR LF in print() function
• added load("filename.be") function which also saves the compiled bytecode in "filename.bec"
• added save("filename.bec",f) to save bytecode representation of a function/closure (used internally and should generally not be used)

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 on Tasmota core ESP8266 V.2.7.4.9
• The code change is tested and works on Tasmota core ESP32 V.1.0.5-rc6
• I accept the CLA.

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