Add Portable Mode (from Theia source)

[pscrespo]

Describe the request

Since Theia has implemented portable mode, can it be ported to the Arduino IDE?
References: eclipse-theia/theia#12690
eclipse-theia/theia-ide#276

Describe the current behavior

Current behavior is no portable mode.

Arduino IDE version

2.x

Operating system

Windows, Linux

Operating system version

Windows 11; Debian

Additional context

I've seen #122, but I can't comment on that one, and thought that this information could be useful for devs.

Issue checklist

• I searched for previous requests in the issue tracker
• I verified the feature was still missing when using the latest nightly build
• My request contains all necessary details

[linxcow]

Lets hope this becomes a reality in 2024 for ide 2.x !

[kittaakos]

Moved to #122 (comment).

Closing as a duplicate