Adds basic hunter signup endpoint

src/main/kotlin/net/halfbinary/scavengerhuntapi/controller/SignupController.kt

@@ -0,0 +1,16 @@
+package net.halfbinary.scavengerhuntapi.controller
+
+import net.halfbinary.scavengerhuntapi.model.converter.toDomain
+import net.halfbinary.scavengerhuntapi.model.request.HunterSignupRequest
+import net.halfbinary.scavengerhuntapi.service.SignupService
+import org.springframework.web.bind.annotation.PostMapping
+import org.springframework.web.bind.annotation.RequestBody
+import org.springframework.web.bind.annotation.RestController
+
+@RestController
+class SignupController(private val signupService: SignupService) {
+    @PostMapping("/signup")
+    fun hunterSignup(@RequestBody body: HunterSignupRequest) {
+        signupService.createNewHunter(body.toDomain())
+    }
+}