Update the local libray index

[dido18]

Describe the problem

Motivation

The library-index (located in /home/arduino/.arduino15/library_index.json) is installed on the board with the latest version available at the time the Debian image was created.

The library index is updated by the arduino-app-cli only when a new library is added.
See #50

The compilation of an example fails if the "add library" was never executed,

To reproduce

Steps

• User receives the board
• User configures the board and installs the latest versions of the software
• User starts the example (with an out-of-date library)
• The compilation fails because the local library index is not updated.

Expected behaviour

Steps

• User receives the board
• User configures the board and installs the latest versions of the software
• User starts the example (with an out-of-date library)
• The compilation succeeded because the library index is automatically updated

Arduino App CLI version

0.6.8

Additional context

• https://github.com/arduino/arduino-deb-images/blob/5344c45fc360a8b249cc3d44f4fe41c318cf1155/debos-recipes/qualcomm-linux-debian-rootfs-arduino-extra.yaml#L196

Issue checklist

• I searched for previous reports in the issue tracker
• I verified the problem still occurs when using the latest version
• My report contains all necessary details