parameterize triesInMemory

[joowon-byun]

Proposed changes

• triesInMemory can be changed by parameter.
  • parameter name: state.tries-in-memory
  • default value: 4

Types of changes

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• Bugfix
• New feature or enhancement
• Others

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Related issues

Further comments

Increasing triesInMemory can increase memory usage. The below result shows memory usage differences when TPS is 2500.
CN0: 4 tries, CN1: 64 tries, CN2: 128 tries, CN3: 256 tries

[ehnuje]

LGTM

[aidan-kwon]

LGTM except for a minor thing