Build WASM binaries as part of cargo build (#2868)

* Introduce `wasm-builder` and `wasm-builder-runner` to retire `build.sh`

Make use of `wasm-builder` in `test-runtime`.

* Add build script and remove the wasm project

* Port `node-runtime` to new wasm-builder

* Make `substrate-executor` tests work with `wasm-builder`

* Move `node-template` to `wasm-builder`

* Remove `build.sh` :)

* Remove the last include_bytes

* Adds the missing build.rs files

* Remove `build.sh` from CI

* Debug CI

* Make it work in CI

* CI attempt 3

* Make `substrate-runtime-test` compile on stable

* Ahhh, some missed `include_bytes!`

* AHH

* Add suggestions

* Improve search for `Cargo.lock` and don't panic if it is not found

* Searching from manifest path was no good idea

* Make the `wasm-builder` source better configurable

* Expose the bloaty wasm binary as well

* Make sure to rerun WASM recompilation on changes in dependencies

* Introduce new `WASM_BUILD_TYPE` env and make sure to call `build.rs` on
changes to env variables

* Remove `build.sh` from READMEs

* Rename the projects

* Fixes CI

* Update lock file

* Fixes merge-conflict

* Apply suggestions from code review

Co-Authored-By: TriplEight <denis.pisarev@parity.io>

* Try to make windows happy

* Replace all back slashes in paths with slashes

* Apply suggestions from code review

Co-Authored-By: Pierre Krieger <pierre.krieger1708@gmail.com>

* Use cargo from `CARGO` env variable

* Fix compilation

* Use `rustup` for running the nightly build

* Make individual projects skipable

* Fix compilation

* Fixes compilation

* Build all WASM projects in one workspace

* Replace more back slashes!

* Remove `inlcude_bytes!`

* Adds some documentation

* Apply suggestions from code review

Co-Authored-By: Shawn Tabrizi <shawntabrizi@gmail.com>

* Apply suggestions from code review

Co-Authored-By: Shawn Tabrizi <shawntabrizi@gmail.com>

* More review comments

* Update `Cargo.lock`

* Set license

* Apply suggestions from code review

Co-Authored-By: joe petrowski <25483142+joepetrowski@users.noreply.github.com>

* More review comments + adds `TRIGGER_WASM_BUILD` env

* Fix doc tests

* Increase version + update README

* Switch crates.io version of `wasm-builder`

* Update README

* Switch to released version of `wasm-builder-runner`

substrate/node/runtime/Cargo.toml

@@ -3,6 +3,7 @@ name = "node-runtime"
 version = "2.0.0"
 authors = ["Parity Technologies <admin@parity.io>"]
 edition = "2018"
+build = "build.rs"
 
 [dependencies]
 integer-sqrt = { version = "0.1.2" }
@@ -37,9 +38,12 @@ rustc-hex = { version = "2.0", optional = true }
 serde = { version = "1.0", optional = true }
 substrate-keyring = { path = "../../core/keyring", optional = true }
 
+[build-dependencies]
+wasm-builder-runner = { package = "substrate-wasm-builder-runner", version = "1.0.0" }
+
 [features]
 default = ["std"]
-core = [
+no_std = [
 	"contracts/core",
 ]
 std = [