Add Opta Cellular as possible connection source for Arduino Opta#133

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maidnl wants to merge 4 commits intoarduino-libraries:masterfrom

maidnl:opta_cellular_dev

Commits on Jan 28, 2025

introducing Cellular possibility on Connection Handler Demo
maidnl
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Introducing Arduino Opta Cellular as possible connection source for Arduino Opta
maidnl
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Commits on Jan 29, 2025

Update src/CellularConnectionHandler.cpp

maidnl
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andreagilardoni
authored

Commits on Jan 31, 2025

handled the case the Opta Cellular is not present
maidnl
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