docs: templated readme (#138)

src/main/kotlin/app/revanced/meta/readme/Generator.kt

@@ -0,0 +1,41 @@
+package app.revanced.patches.meta.readme
+
+import java.io.File
+import kotlin.io.writeText
+import kotlin.collections.first
+import app.revanced.patcher.util.patch.implementation.JarPatchBundle
+import app.revanced.patcher.extensions.PatchExtensions.compatiblePackages
+import app.revanced.patcher.extensions.PatchExtensions.patchName
+import app.revanced.patcher.extensions.PatchExtensions.description
+
+class Generator {
+    companion object {
+        @JvmStatic
+        fun main(args: Array<String>) {
+            val buildDir = File("build/libs/")
+            val buildJar = buildDir.listFiles().first { it.name.startsWith("revanced-patches-") && it.name.endsWith(".jar") }
+
+            val bundle = JarPatchBundle(buildJar.absolutePath).loadPatches()
+
+            val table = StringBuilder()
+
+            for (patch in bundle) {
+                val humanName =
+                    patch.patchName.split('-').map { it.replaceFirstChar { it.uppercase() } }.joinToString(" ")
+
+                val compatiblePackage = patch.compatiblePackages?.first()
+                val latestVersion = compatiblePackage?.versions?.maxByOrNull { it.replace(".", "").toInt() } ?: "all"
+
+                table.appendLine("|$humanName|${patch.description}|`${compatiblePackage?.name}`|$latestVersion|")
+            }
+
+            val readMeTemplateFile = File("README-template.md")
+            val readMeTemplate = Template(readMeTemplateFile.readText())
+
+            readMeTemplate.replaceVariable("table", table.toString())
+
+            val readMeFile = File("README.md")
+            readMeFile.writeText(readMeTemplate.toString())
+        }
+    }
+}