Add Tip Attempt Timing to Config and Modify Delay Configuration

[vctt94]

• Changed tip attempt timestamps to use local time.
  • This is necessary because time.Now() returns the time in local time.
• Updated the expiration delay to use a constant delay value instead of an exponential delay.
  • This change is needed because the next action time increases too quickly. See the log example:

    2024-12-20 13:48:58.760 [DBG] CLNT: Restarting 2 tip attempts. Delay to next action: 48m52.919274312s
    

• Added related configurations to brclient.conf.