feat: compress images before sending

app/src/main/kotlin/com/simplemobiletools/smsmessenger/extensions/String.kt

@@ -0,0 +1,16 @@
+package com.simplemobiletools.smsmessenger.extensions
+
+fun String.getExtensionFromMimeType(): String {
+    return when (this) {
+        "image/png" -> ".png"
+        "image/apng" -> ".apng"
+        "image/webp" -> ".webp"
+        "image/svg+xml" -> ".svg"
+        "image/gif" -> ".gif"
+        else -> ".jpg"
+    }
+}
+
+fun String.isImageMimeType(): Boolean {
+    return startsWith("image")
+}