GH-2601 Allow .aar by default (#2602)

* Allow .aar by default

* Update docs

Author: otbutz

reposilite-backend/src/main/kotlin/com/reposilite/maven/application/MavenSettings.kt

@@ -81,7 +81,7 @@ data class MirroredRepositorySettings(
     @get:Doc(title = "Allowed Groups", description = "Allowed artifact groups. If none are given, all artifacts can be obtained from this mirror.")
     val allowedGroups: List<String> = listOf(),
     @get:Doc(title = "Allowed Extensions", description = "List of accepted file extensions. If none are given, all files can be obtained from this mirror.")
-    val allowedExtensions: List<String> = listOf(".jar", ".war", ".pom", ".xml", ".module", ".md5", ".sha1", ".sha256", ".sha512", ".asc"),
+    val allowedExtensions: List<String> = listOf(".jar", ".war", ".aar", ".pom", ".xml", ".module", ".md5", ".sha1", ".sha256", ".sha512", ".asc"),
     @Min(0)
     @get:Doc(title = "Connect Timeout", description = "How long Reposilite can wait for establishing the connection with a remote host. (In seconds)")
     val connectTimeout: Int = 3,

reposilite-site/data/guides/features/mirrors.md

@@ -59,6 +59,7 @@ By default, Reposilite allows these extensions:
 
 - `.jar`
 - `.war`
+- `.aar`
 - `.xml`
 - `.pom`
 - `.module`