f32/f64/usize in cosmwasm(and other no f32/f64 envs) reproduction and fixes

.changelog/unreleased/improvements/850-fix-wasm-compilation-error-with-floats.md

@@ -0,0 +1,4 @@
+- Fix compilation issue with Wasm envs because of floats
+  - Use `serde-json-wasm` dependency instead of `serde-json` for no-floats support
+  - Add CI test to include CosmWasm compilation check
+([/#850](https://github.com/cosmos/ibc-rs/issues/850))

.github/workflows/cw-check.yaml

@@ -0,0 +1,38 @@
+name: CosmWasm Compilation Check
+on:
+  pull_request:
+    paths:
+      - .github/workflows/cw-check.yml
+      - ci/cw-check/**
+
+on:
+  push:
+    tags:
+      - v[0-9]+.*
+    branches:
+      - 'release/*'
+      - main
+    paths:
+      - .github/workflows/cw-check.yml
+      - Cargo.toml
+      - Cargo.lock
+      - ci/cw-check/**
+      - crates/**
+
+jobs:
+  cw-check:
+    runs-on: ubuntu-20.04
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Install Nix
+        uses: cachix/install-nix-action@v22
+        with:
+          nix_path: nixpkgs=channel:nixos-unstable
+          extra_nix_config: |
+            experimental-features = nix-command flakes
+
+      - name: Run cw-check
+        run: |
+          cd ci/cw-check
+          nix-shell --run "cw-check"

.github/workflows/no-std.yaml

@@ -5,15 +5,15 @@ on:
       - .github/workflows/no-std.yml
       - Cargo.toml
       - Cargo.lock
-      - ci/**
+      - ci/no-std-check/**
       - crates/**
   push:
     branches: main
     paths:
       - .github/workflows/no-std.yml
       - Cargo.toml
       - Cargo.lock
-      - ci/**
+      - ci/no-std-check/**
       - crates/**
 
 jobs:

Cargo.toml

@@ -9,5 +9,6 @@ members = [
 ]
 
 exclude = [
+    "ci/cw-check",
     "ci/no-std-check",
 ]