build: directly generate js libs to node_modules

Roll back stellar#122, but
keep `crowdfund-contract` and `abundance-token` in
`optionalDependencies`.

As I worked with the old version in earnest, iterating on a local copy
of the CLI and generating new JS libs over and over, the two-step
generate-to-.soroban, then install-to-node_modules wasn't working very
well. Probably because the new library wasn't being added until the
`postinstall` step, and the dependencies are optional.

Generating directly to `node_modules` feels dirty, but it works
consistently. At least in this version, you can still see the
dependencies listed in the `optionalDependencies` section, so they're
not quite as surprising/mysterious.

.gitattributes

@@ -0,0 +1 @@
+package-lock.json linguist-generated=true -diff

package.json

@@ -8,9 +8,9 @@
     "start": "next start",
     "lint": "next lint",
     "setup": "./initialize.sh ${NETWORK:-futurenet} && npm install",
-    "clean": "rm -rf .next .soroban .soroban-example-dapp node_modules",
+    "clean": "rm -rf .next .soroban .soroban-example-dapp",
     "reset": "npm run clean && npm run setup",
-    "postinstall": "rm -rf ./.soroban/crowdfund-contract && rm -rf ./.soroban/abundance-token && ./target/bin/soroban contract bindings typescript --wasm ./target/wasm32-unknown-unknown/release/soroban_crowdfund_contract.wasm --id $(cat ./.soroban-example-dapp/crowdfund_id) --rpc-url $(cat ./.soroban-example-dapp/rpc-url) --network-passphrase \"$(cat ./.soroban-example-dapp/passphrase)\" --output-dir ./.soroban/crowdfund-contract --contract-name crowdfund-contract && ./target/bin/soroban contract bindings typescript --wasm ./target/wasm32-unknown-unknown/release/abundance_token.wasm --id $(cat ./.soroban-example-dapp/abundance_token_id) --rpc-url $(cat ./.soroban-example-dapp/rpc-url) --network-passphrase \"$(cat ./.soroban-example-dapp/passphrase)\" --output-dir ./.soroban/abundance-token --contract-name abundance-token"
+    "postinstall": "cargo build --target wasm32-unknown-unknown --release && ./target/bin/soroban contract bindings typescript --wasm ./target/wasm32-unknown-unknown/release/soroban_crowdfund_contract.wasm --id $(cat ./.soroban-example-dapp/crowdfund_id) --output-dir ./node_modules/crowdfund-contract --network $(cat ./.soroban-example-dapp/network) --contract-name crowdfund-contract && ./target/bin/soroban contract bindings typescript --wasm ./target/wasm32-unknown-unknown/release/abundance_token.wasm --id $(cat ./.soroban-example-dapp/abundance_token_id) --output-dir ./node_modules/abundance-token --network $(cat ./.soroban-example-dapp/network) --contract-name abundance-token"
   },
   "dependencies": {
     "@radix-ui/react-dialog": "1.0.2",
@@ -22,9 +22,7 @@
     "next": "^13.4.4",
     "react": "^18.2.0",
     "react-dom": "^18.2.0",
-    "soroban-client": "0.9.2",
-    "crowdfund-contract": "file:.soroban/crowdfund-contract",
-    "abundance-token": "file:.soroban/abundance-token"
+    "soroban-client": "0.9.1"
   },
   "devDependencies": {
     "@types/humanize-duration": "^3.27.1",
@@ -35,6 +33,10 @@
     "eslint-config-next": "^13.3.1",
     "typescript": "5.1.3"
   },
+  "optionalDependencies": {
+    "crowdfund-contract": "file:node_modules/crowdfund-contract",
+    "abundance-token": "file:node_modules/abundance-token"
+  },
   "engines": {
     "node": ">=17",
     "npm": ">=8"