PriceTable TxnFee Estimates

MERGE REQUEST

MR Guidelines

Overview

This MR adds two fields to the price table TxnFeeMinRecommended and TxnFeeMaxRecommended. Using these estimates the renter will be able to avoid rejected for including too few transaction fees errors which have been popping up more and more lately

Example for Visual Changes

N/A

Checklist

Review and complete the checklist to ensure that the MR is complete before assigned to an approver.

• All new methods or updated methods have clear docstrings
• Testing added or updated for new methods
• Any new packages are added to Makefile and .gitlab-ci.yml
• API documentation updated for API updates
• Module README.md updated for changes to workflow
• Issue added to Sia-UI repo for new supporting features
• Changelog File Created

Issues Closed

Closes #4227 (closed)