feat(exception): add TronError for system.exit optimization by halibobo1205 · Pull Request #6170

feat(exception): add TronError for system.exit optimization by halibobo1205 · Pull Request #6170 · tronprotocol/java-tron

What does this PR do?

Add TronError for system.exit optimization.

Why are these changes required?

This is the first PR for Optimize System.exit Usage and API Services Fail to Start Silently, API services fail to start should throw TronError, then system.exit is triggered by exitManager.

This PR has been tested by:

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