* added sfield constants
* added mock_data, data is read from json file. Hashes and AccountIDs fields are decoded to binary when requested by host functions to match ripples. 
* added Locator string
* refactored main and vm
* some basic tests done, more tests are needed

* Add trace host function
* Update build to support WASM panic handler
* Add supporting layer for errors
* Update `xrpl_std_example` to emit text and numeric data
* Add helper build scripts

…dd-trace

# Conflicts:
#	projects/xrpl_std_example/src/lib.rs
#	wasm-host/src/host_functions.rs
#	wasm-host/src/main.rs
#	wasm-host/src/vm.rs
#	xrpl-std/src/lib.rs

* added sfield constants
* added mock_data, data is read from json file. Hashes and AccountIDs fields are decoded to binary when requested by host functions to match ripples.
* added Locator string
* refactored main and vm
* some basic tests done, more tests are needed

…dd-trace

* added sfield constants
* added mock_data, data is read from json file. Hashes and AccountIDs fields are decoded to binary when requested by host functions to match ripples.
* added Locator string
* refactored main and vm
* some basic tests done, more tests are needed

…dd-trace

example command:

craft build --project host_functions_test --release --opt-level z

Resolved merge conflicts

MockData uses SField_To_Name for field name retrieval

* update to latest JS beta

Resolved conflicts

Updated package.json to use xrpl version 4.3.0-smartescrow.3 and ripple-binary-codec version 2.4.0-smartescrow.2

When running tests, look for the following to see that the tests actually passed:

  WASM TRACE: SUCCESS: All host function tests passed!

also, look to see:

  Result:     true

Here is an example test command:

  craft test --project host_functions_test --test-case success

Fix merge conflicts in `df/struct-types`

…work

Resolve merge conflicts

Consolidate decode function implementations