JAG: logging class and string util methods extracted to independent modules

This allows py-scripts and py-json modules to access this logic independent of the lanforge_api.py module.

Signed-off-by: Jed Reynolds <jed@bitratchet.com>

lanforge_client/strutil.py

@@ -0,0 +1,20 @@
+def iss(text: str) -> bool:
+    """
+
+    :param text: string to test
+    :return: true if text is at lease one non-whitespace character
+    """
+    if text is None:
+        return False
+    if (len(text) == 0) or (text.strip() == ""):
+        return False
+    return True
+
+
+def nott(text: str) -> bool:
+    """
+
+    :param text:
+    :return: opposite of is
+    """
+    return not iss(text=text)