Fix pubkey exception for dotfiles

app/src/main/java/io/xpipe/app/cred/SshIdentityStrategy.java

@@ -61,7 +61,7 @@ public interface SshIdentityStrategy {
     }
 
     static FilePath getPublicKeyPath(FilePath file) {
-        if (file.getExtension().isEmpty()) {
+        if (file.getExtension().isEmpty() || file.isDotFile()) {
             return FilePath.of(file + ".pub");
         } else {
             return FilePath.of(file.getBaseName() + ".pub");

core/src/main/java/io/xpipe/core/FilePath.java

@@ -117,6 +117,12 @@ public final class FilePath {
         return components.getLast();
     }
 
+    public boolean isDotFile() {
+        var name = getFileName();
+        var lastDot = name.lastIndexOf(".");
+        return lastDot == 0;
+    }
+
     public FilePath getBaseName() {
         var name = getFileName();
         var lastDot = name.lastIndexOf(".");