Add API version to api/version end-point

src/main/java/haveno/price/ApiController.java

@@ -0,0 +1,23 @@
+package haveno.price;
+
+import java.util.HashMap;
+import java.util.Map;
+
+import lombok.RequiredArgsConstructor;
+import org.springframework.core.env.Environment;
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.RestController;
+
+@RestController
+@RequiredArgsConstructor
+public class ApiController {
+
+    private final Environment env;
+
+    @GetMapping("/api/version")
+    public Map<String, String> getVersion() {
+        Map<String, String> response = new HashMap<>();
+        response.put("version", env.getProperty("haveno.price-node.api.version", ""));
+        return response;
+    }
+}

src/main/resources/application.properties

@@ -1,9 +1,10 @@
+haveno.price-node.api.version=1.0.0
 server.port=8078
 spring.jackson.serialization.indent_output=true
 
 # To enable another fee estimation endpoint, simply uncomment one of the following lines
 # and set it to hostname exposing the fee estimation API
-#haveno.price.mining.providers.mempoolHostname.5=someHostOrIP
+# haveno.price.mining.providers.mempoolHostname.5=someHostOrIP
 haveno.price.fiatcurrency.excluded=LBP
 haveno.price.fiatcurrency.excludedByProvider=HUOBI:BRL,KRAKEN:AED
 haveno.price.cryptocurrency.excluded=