implement osis actor

examples/scripts/finance.rhai

@@ -0,0 +1,58 @@
+// finance.rhai
+
+// Account
+let new_account = new_account()
+    .name("My Test Account")
+    .user_id(1)
+    .description("A test account for finance.")
+    .ledger("main")
+    .address("0x123...")
+    .pubkey("0x456...")
+    .add_asset(1)
+    .save_account();
+
+print("New Account:");
+print(new_account);
+
+// Asset
+let new_asset = new_asset()
+    .name("HeroCoin")
+    .description("The official coin of HeroCode.")
+    .amount(1000.0)
+    .address("0xabc...")
+    .decimals(18)
+    .asset_type("erc20")
+    .save_asset();
+
+print("\nNew Asset:");
+print(new_asset);
+
+// Listing
+let new_listing = new_listing()
+    .title("100 HeroCoins for sale")
+    .description("Get your HeroCoins now!")
+    .asset_id("1")
+    .seller_id("1")
+    .price(1.5)
+    .currency("USD")
+    .asset_type("erc20")
+    .listing_type("FixedPrice")
+    .status("Active")
+    .expires_at(1735689600) // Some future timestamp
+    .image_url("http://example.com/herocoin.png")
+    .add_tag("crypto")
+    .save_listing();
+
+print("\nNew Listing:");
+print(new_listing);
+
+// Bid
+let new_bid = new_bid()
+    .listing_id("1")
+    .bidder_id(2)
+    .amount(1.6)
+    .currency("USD")
+    .status("Active");
+
+print("\nNew Bid:");
+print(new_bid);