Update security issues command

exasol/toolbox/tools/security_issues.py

@@ -1,3 +1,5 @@
+import sys
+
 import typer
 from rich.console import Console
 
@@ -8,18 +10,25 @@
 
 
 @CLI.command(name="convert")
-def convert() -> None:
-    pass
+def convert(
+        format: str = typer.Argument(..., help="input format to be converted."),
+) -> None:
+    for line in sys.stdin:
+        stdout.print(line)
 
 
 @CLI.command(name="filter")
-def filter() -> None:
-    pass
+def filter(
+        type: str = typer.Argument(..., help="filter type to apply"),
+) -> None:
+    for line in sys.stdin:
+        stdout.print(line)
 
 
 @CLI.command(name="create")
 def create() -> None:
-    pass
+    for line in sys.stdin:
+        stdout.print(line)
 
 
 if __name__ == "__main__":