feat: Add internal liquidity provider update and vesting setup functions

[SynnekOG]

PR Description

Summary

This PR extends the LiquidityManagerV2 contract by introducing internal helper functions to manage liquidity provider state and vesting schedules.

Changes

• Added _updateLiquidityProvider internal function:
  • Updates provider data (amount, timestamp, liquidity).
  • Adds new providers to the pool.
  • Triggers vesting setup once liquidity thresholds are met.
  • Emits LiquidityThresholdReached event.
• Added _setupVesting internal function:
  • Configures vesting schedules via vestingContract.
  • Emits VestingScheduleCreated event.
• Applied forge fmt for consistent code formatting.

Impact

• Improves modularity and maintainability by separating provider updates and vesting logic.
• Enables automated vesting schedule setup once thresholds are reached.
• Provides richer event logs for external monitoring.

Next Steps

• Write unit tests for _updateLiquidityProvider and _setupVesting.
• Validate event emissions in integration tests.
• Extend vesting logic to support multiple token types if required.