Add Option To Backup TheNewEconomy Balances

Description of Feature

Add to the backup process when enabled in Wardenctl config (wardenctl.conf) to extract all player balances with their associated username for TheNewEconomy plugin.

Reason For Feature

1. It has been found that TheNewEconomy database can get corrupted on occasion. Therefore having the data extracted helps to restore player's associated currency balance.
2. This aids in server migration.

Command Behaviour

The data is extracted running the command tne extract.

• On the run of the command the file extracted.yml is created at the root of the plugin directory (e.g. /srv/minecraft/paper/server/plugins/TheNewEconomy/extracted.yml).
• On the second and sequential runs of the command it creates a sub-directory called extractions at the root of the plugin directory (e.g. /srv/minecraft/paper/server/plugins/TheNewEconomy/extractions). Then the previously extracted.yml file is moved to the extractions sub-directory changing the file name to extracted-YYYY-MM-DD-HH-MM-SS.yml. The YYYY-MM-DD-HH-MM-SS is dynamically populated with the current datatime values.

  -rw-rw---- 1 minecraft minecraft 1.1K Jan 18 20:31 extracted-2020-01-18-20-47-10.yml
  -rw-rw---- 1 minecraft minecraft  957 Jan 18 20:59 extracted-2020-01-18-21-30-17.yml
  -rw-rw---- 1 minecraft minecraft  965 Jan 25 11:29 extracted-2020-02-28-17-04-42.yml

Note: The file extracted.yml must be existing in the root of the plugin directory (e.g. /srv/minecraft/paper/server/plugins/TheNewEconomy/extracted.yml) before the data is moved to the sub-directory extractions.