refactor: Adjust koin module API

bot/src/main/kotlin/io/github/null2264/tsukumogami/bot/Main.kt

@@ -1,6 +1,7 @@
 package io.github.null2264.tsukumogami.bot
 
 import co.touchlab.kermit.Logger
+import io.github.null2264.tsukumogami.bot.core.di.appModule
 import io.github.null2264.tsukumogami.bot.core.module.generalModule
 import io.github.null2264.tsukumogami.core.bot
 
@@ -14,5 +15,7 @@ suspend fun main() {
         prefixes("src!", "mm!") // mm! for backwards compatibility
 
         modules(generalModule)
+
+        koinModules(appModule)
     }.start()
 }

core/src/main/kotlin/io/github/null2264/tsukumogami/core/BotBuilder.kt

@@ -25,8 +25,8 @@ class BotBuilder internal constructor(
         }
     }
 
-    internal var beforeKoinSetup: () -> Unit = {}
-    internal var afterKoinSetup: () -> Unit = {}
+    internal var earlyKoinModules = mutableListOf<KoinModule>()
+    internal var koinModules = mutableListOf<KoinModule>()
 
     fun modules(vararg modules: BotModule) {
         modules.forEach(bot::addModule)
@@ -36,12 +36,12 @@ class BotBuilder internal constructor(
         prefixes.forEach(bot::addPrefix)
     }
 
-    fun beforeKoinSetup(declaration: () -> Unit) {
-        beforeKoinSetup = declaration
+    fun earlyKoinModules(vararg modules: KoinModule) {
+        earlyKoinModules.addAll(modules)
     }
 
-    fun afterKoinSetup(declaration: () -> Unit) {
-        afterKoinSetup = declaration
+    fun koinModules(vararg modules: KoinModule) {
+        koinModules.addAll(modules)
     }
 }
 
@@ -54,13 +54,13 @@ suspend fun bot(clazz: KFunction<Bot> = ::Bot, declaration: BotBuilder.() -> Uni
     val holder = BotBuilder(bot)
     declaration(holder)
 
-    holder.beforeKoinSetup.invoke()
+    holder.earlyKoinModules.forEach(::loadModule)
 
     val kord = holder.kordBuilder(holder.token)
     loadModule { single { kord } bind Kord::class }
     loadModule { single { bot } bind Bot::class }
 
-    holder.afterKoinSetup.invoke()
+    holder.koinModules.forEach(::loadModule)
 
     return holder.bot
 }

core/src/main/kotlin/io/github/null2264/tsukumogami/core/ext/KoinExtensions.kt

@@ -15,3 +15,9 @@ fun loadModule(
 
     return moduleObj
 }
+
+fun loadModule(module: Module): Module {
+    TsukumogamiKoinContext.loadKoinModules(module)
+
+    return module
+}