Add Android and iOS for CI builds

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[nick-mobilecoin]

Current dependencies on/for this PR:

• main
  • PR Ensure types crates don't use alloc with CI #179
    • PR Add Android and iOS for CI builds #181 👈

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[codecov-commenter]

Codecov Report

Merging #181 (73ae852) into main (0a6a190) will decrease coverage by 0.36%.
The diff coverage is 8.33%.

❗ Current head 73ae852 differs from pull request most recent head 8b3bb08. Consider uploading reports for the commit 8b3bb08 to get more accurate results

@@            Coverage Diff             @@
##             main     #181      +/-   ##
==========================================
- Coverage   88.08%   87.72%   -0.37%     
==========================================
  Files          41       41              
  Lines        2653     2664      +11     
==========================================
  Hits         2337     2337              
- Misses        316      327      +11     

Impacted Files	Coverage Δ
core/build/src/lib.rs	0.60% <0.00%> (-0.05%)	⬇️
core/types/src/lib.rs	100.00% <ø> (ø)
urts/sys/types/src/lib.rs	100.00% <ø> (ø)
core/types/src/error.rs	54.54% <100.00%> (ø)

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