New installations don't clean the database

[VakarisZ]

Describe the bug

New installations doesn't clean the database, so when users update, the monkey crashes, because of the old database.

To Reproduce

Steps to reproduce the behavior:

1. Install 1.7
2. Run monkey
3. Update to 1.10
4. Monkey tries to use 1.7 database and crashes

Expected behavior

On installation, database directory should be found and cleaned. Update: the whole data dir should probably be cleaned.

Screenshots

Machine version (please complete the following information):

• OS: Windows or Linux (unknown, likely both)

Tasks

Tasks:

• Alter MSI installers to remove the default data_dir on uninstall: - @VakarisZ
• Add the below logic to ensure a smooth upgrade process for AppImage or MSI with custom data_dir - @VakarisZ

Pseudocode

def island_start():
    if data_dir exists:
        if data_dir/version exists and not my_version == data_dir/version:
            rename data_dir
        else if not data_dir/version exists:
            rename data_dir