(IK) Base Break Buy (Updated to v6)

An update to tapRoot_coding's (IK) Base Break Buy strategy.

Key Changes from Pine Script v4 to v6:

• Version Declaration: Updated the version declaration from //version=4 to //version=6 to specify the use of Pine Script v6.
  
• Input Functions: Changed input functions to use the new input.int, input.float, and input.string functions, which are more explicit and provide better type safety compared to the generic input function used in v4.
  
• Persistent Variables: Used the var keyword for persistent variables (e.g., bases, closestBase, brokenBase) to ensure they retain their values across script executions. This is a best practice in v6 to clearly indicate variables that should persist.
  
• Function Definitions: Updated function definitions to use the new arrow function syntax (=>) introduced in v6, which provides a more concise way to define functions.
  
• Array Handling: Ensured that array operations (e.g., array.new_float(), array.get(), array.size()) are compatible with v6, which may have introduced new methods or changed existing ones.
  
• Strategy Entry and Exit: Corrected the strategy.entry function to use the direction parameter instead of the long argument, which is not recognized in v6. This specifies whether the trade is long or short.
  
• Plotting: Verified that plotting functions (e.g., plot()) are compatible with v6, ensuring that any new features or changes in syntax are accounted for.