[Feature] Adding a README file in a new installation

[aviv926]

The feature

When a user sets up Immich for the first time, it is necessary to add a README file that contains information about the reference to the documentation and information about the prohibition not to touch the files in the folders because any touching of the files in these folders can cause problems on the "repair" page.
You can write (as it appears in the documentation):

Do not touch the files inside these folders under any circumstances except taking a backup, changing or removing an asset can cause untracked and missing files. You can think of it as App-Which-Must-Not-Be-Named, the only access to viewing, changing and deleting assets is only through the mobile or browser interface.

Platform

• Server
• Web
• Mobile