Finish early mono sign when skipping factor

[micbakos-rdx]

Updated mono sign, to return no request when there are no remaining per transaction requests. When a user skips a factor source, the signature collector will iterate to the next factor source. There if there are no more remaining still to be signed as valid transactions, the iterator continues. This ends up ending the collector's signing process, with an unsuccessful outcome.

• Updated the tests to incorporate skipping of a factor source instead of just failing one.
• Added some missing kotlin extensions needed in host to sign, with a mnemonic, multiple per transaction signables at once and also an extension to derive factor source ids. Both were required for the integration with the host

[codecov]

Codecov Report

Attention: Patch coverage is 87.09677% with 4 lines in your changes missing coverage. Please review.

Project coverage is 92.84%. Comparing base (eca2370) to head (c3fdaf8).
Report is 1 commits behind head on main.

Files with missing lines	Patch %	Lines
.../app/signing/src/collector/signatures_collector.rs	75.00%	4 Missing ⚠️

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #342   +/-   ##
=======================================
  Coverage   92.84%   92.84%           
=======================================
  Files        1160     1160           
  Lines       25797    25815   +18     
  Branches       85       85           
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+ Hits        23952    23969   +17     
- Misses       1834     1835    +1     
  Partials       11       11           

Flag	Coverage Δ
kotlin	97.90% <100.00%> (+0.02%)	⬆️
rust	92.37% <76.47%> (-0.01%)	⬇️
swift	93.76% <ø> (ø)

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[CyonAlexRDX]

Prudent means "never skips". So this looks wrong. Better let this be ctor of Lazy. And update definition of Lazy:

-    /// Emulation of a "lazy" user, that skips signing with as many factor
-    /// sources as possible.
+    /// Emulation of a "lazy" user, that skips signing with as some factor
+    /// sources, depending on `Laziness`.
    Lazy(Laziness),

[micbakos-rdx]

Yes, but Laziness has no option to sign all the rest of the factor sources except the ones defined in simulated_skips. This is what I wanted to achieve.

Lazyness describes a user that either skips all all or signs the minimum.

[Sajjon]

Yes so we update Laziness enum with a third variant..?

SkipsSpecific(IndexSet<_>)

[micbakos-rdx]

@matiasbzurovski @CyonAlexRDX

Latest changes:

1. Added to user mode a user that skips specific factors.
2. Introduced a new error for when the user fails to sign since too many factors neglected.
3. Added --locked to cargo ndk.