Expose a way to get Model from targetId

[juan-cortes]

This all comes from the context of wanting to expose the model id in a nice way for the proxy transport instead of relying on a fallback to nanoS like we do for listApps https://github.com/LedgerHQ/ledger-live-common/blob/master/src/apps/hw.js#L124 we could use the deviceInfo we already have access to and enhance it with the device model data. Or even modify the signature of DeviceInfo to include the model data at some point.

This allows us to unlock LNX proxied LLM development, especially in tasks involving the manager where this nanoS fallback brings storage problems.

[gre]

please regenerate documentation for CI to pass.

[juan-cortes]

please regenerate documentation for CI to pass.

yarn doc right? committed the changes

[codecov]

Codecov Report

Merging #621 (52f4561) into master (c7a45ad) will increase coverage by 0.65%.
The diff coverage is 100.00%.

❗ Current head 52f4561 differs from pull request most recent head 9df7a0f. Consider uploading reports for the commit 9df7a0f to get more accurate results

@@            Coverage Diff             @@
##           master     #621      +/-   ##
==========================================
+ Coverage   40.76%   41.42%   +0.65%     
==========================================
  Files          70       70              
  Lines        4006     4010       +4     
  Branches      707      707              
==========================================
+ Hits         1633     1661      +28     
+ Misses       2121     2098      -23     
+ Partials      252      251       -1     

Impacted Files	Coverage Δ
packages/cryptoassets/src/currencies.js	100.00% <ø> (ø)
packages/devices/src/index.js	65.11% <100.00%> (+65.11%)	⬆️

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