[FEATURE REQUEST]: Better self update system on Windows

[SylEze]

Is your feature request related to a problem? Please describe.

• We recently released our self update system in https://github.com/KomodoPlatform/atomicDEX-Desktop/issues/714.
• Basically, it downloads latest release files and copies/pastes them inside AtomicDEX folder.
• The self update system is contained inside the AtomicDEX application which leaded to new issues: on Windows, you cannot replace files which are already used by a process, which is not the case on Linux or MacOS (tell me if it's wrong or not accurate). However, renaming used files is possible !
• As you deduced, our workaround was to rename every AtomicDEX folder's file so there will be no conflicts when copying the update ones.

I'm sure this workaround will be someday error/crash prone.

Describe the solution you'd like Having an external tool (probably another executable) which is only dedicated to update AtomicDEX.

[smk762]

@SylEze since the recent updater checking, has this been implemented?