Append rows to an "AllTransactData_DO_NOT_EDIT" .csv file in the app's working directory.

[CaelCoruscare]

Currently, a spreadsheet report is created in the folder where the photos are pulled from. If a report already exists there, the existing report is renamed to a hidden "/.backup_transactData.csv" file.

We want to also create a report in the folder where WildSort is run, called "allTransactData_DO_NOT_EDIT.csv", if it does not already exist. If the file already exists, we want to append the data rows onto the end of the file.

The idea is that the file will act as a "central database" that does not require any experience with databases.

[CaelCoruscare]

The reason for the "DO_NOT_EDIT" is that users should be using save-as to create a copy, before doing any visualization work.

It would be a good idea to add a README file to the same directory, with those instructions.