refactor: read steam path from gradle

paths.ts

@@ -1,9 +1,17 @@
 import { resolve } from "@std/path"
 
+const readGradle = async (): Promise<Record<string, string>> => {
+  const gradle = await Deno.readTextFile("gradle.properties")
+
+  return Object.fromEntries(gradle.split("\n").map((line) => line.trim().split("=")))
+}
+
+const gradleProperties = await readGradle()
+
 export const root = import.meta.dirname!
 export const jar = resolve(root, "build", "libs", "MarisaContinued.jar")
 export const image = resolve("docs", "thumbnail", "image.jpg")
 
 export const home = Deno.env.get("HOME")!
-export const steam = resolve(home, ".steam", "steam", "steamapps", "common")
+export const steam = resolve(gradleProperties["userSteamDir"], "common")
 export const mod = resolve(steam, "SlayTheSpire", "MarisaContinued")