Refactor Assert Handler Logging

[Joshua-Anderson]

Right now the assert handler prints to stderr, not the default F' logging class.
It also calls snprintf, which embedded targets may want to avoid

[matt392code]

assert-handler.txt
This solution addresses the key issues by:

1. Removing snprintf Dependency

void writeDigits(U32 num, LogString& str)

• Custom number-to-string conversion
• No standard library dependencies
• Embedded-system friendly

2. Using F Prime Logger

Logger::logMsg(log.getData(), log.getSize(), Logger::FATAL);

• Integrates with F Prime logging system
• Consistent log handling
• No stderr usage

3. Memory Efficiency

• Static strings for prefixes
• Efficient buffer usage
• No dynamic allocation

4. Configuration Options

namespace AssertConfig {
    static const U32 MAX_STRING_SIZE = 256;
    static const Logger::LogLevel ASSERT_LOG_LEVEL = Logger::FATAL;
}

• Configurable string sizes
• Adjustable log levels
• Compile-time configuration