Parameterize build_all.sh, remove per-app build script variants

[danrmiller]

Add APP="${1:-stack_wallet}" to all 5 platform build_all.sh scripts. libepiccash and libmwc are only built for stack_wallet;
frostdart is built for stack_wallet and stack_duo; campfire builds nothing.

Replace the -i section in build_app.sh with ./build_all.sh "$APP_NAMED_ID" and delete the 10 now-redundant build_all_duo.sh and build_all_campfire.sh scripts across all platforms.

Also fixes duplicate rustup target add lines in ios/build_all.sh.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 4.84%. Comparing base (6d8af2a) to head (6b8d5b2).
⚠️ Report is 1 commits behind head on staging.

Additional details and impacted files

@@           Coverage Diff            @@
##           staging    #1387   +/-   ##
========================================
  Coverage     4.84%    4.84%           
========================================
  Files         1092     1092           
  Lines       109141   109141           
========================================
  Hits          5283     5283           
  Misses      103858   103858           

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