b207464fe6 Update README.md with bdk-ffi-bindgen info (Steve Myers)
fca5d1602b Add workspace and move bin to bdk-ffi-bindgen package (Steve Myers)
f4e097c4ac Only print python fix up lib path if used (Steve Myers)
c66dfdd52a Use structopt to capture generate options (Steve Myers)
ce848725b4 Add binary to remove the need for uniffi-bindgen cli tool (thunderbiscuit)
Pull request description:
This PR is based on the mozilla/application-services [embedded-uniffi-bindgen](https://github.com/mozilla/application-services/tree/main/tools/embedded-uniffi-bindgen) tool. The purpose is to keep the bdk-ffi and bdk-ffi-bindgen tool in sync with the same version of uniffi-rs.
Fixes#124, this PR replaces #122.
The `bdkffi` library code remains unchanged but the `bin/generate` and `bin/generate-bindings` bins are combined and put in a new workspace binary package called `bdk-ffi-bindgen`. The `bdk-ffi-bindgen` binary uses the following options, defaults, and environment variables:
```shell
% cargo run -p bdk-ffi-bindgen -- --help
bdk-ffi-bindgen 0.1.0
A tool to generate bdk-ffi language bindings
USAGE:
bdk-ffi-bindgen [OPTIONS] --language <language> --out-dir <out-dir>
FLAGS:
-h, --help Prints help information
-V, --version Prints version information
OPTIONS:
-l, --language <language>
Language to generate bindings for [env: BDKFFI_BINDGEN_LANGUAGE=] [possible values: kotlin, swift, python]
-o, --out-dir <out-dir>
Output directory to put generated language bindings [env: BDKFFI_BINDGEN_OUTPUT_DIR=]
-p, --python-fixup-path <python-fixup-path> Python fix up lib path [env: BDKFFI_BINDGEN_PYTHON_FIXUP_PATH=]
-u, --udl-file <udl-file> UDL file [env: BDKFFI_BINDGEN_UDL=] [default: src/bdk.udl]
```
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