feat: Add support for mCaptcha (#12905)

* feat: Add support for mCaptcha

* fix: Fix docker compose configuration

* chore(frontend/docs): update changelog & fix eslint errors

* `@mcaptcha/vanilla-glue`をダイナミックインポートするように

* chore: Add missing prefix to CHANGELOG

* refactor(backend): 適当につけた変数の名前を変更

packages/backend/src/models/Meta.ts

@@ -191,6 +191,29 @@ export class MiMeta {
 	})
 	public hcaptchaSecretKey: string | null;
 
+	@Column('boolean', {
+		default: false,
+	})
+	public enableMcaptcha: boolean;
+
+	@Column('varchar', {
+		length: 1024,
+		nullable: true,
+	})
+	public mcaptchaSitekey: string | null;
+
+	@Column('varchar', {
+		length: 1024,
+		nullable: true,
+	})
+	public mcaptchaSecretKey: string | null;
+
+	@Column('varchar', {
+		length: 1024,
+		nullable: true,
+	})
+	public mcaptchaInstanceUrl: string | null;
+
 	@Column('boolean', {
 		default: false,
 	})
@@ -467,7 +490,7 @@ export class MiMeta {
 		nullable: true,
 	})
 	public truemailInstance: string | null;
-	
+
 	@Column('varchar', {
 		length: 1024,
 		nullable: true,