Added configuration file

pybackup.conf

@@ -0,0 +1,10 @@
+{"locations": [
+    {
+        "name": "testlocation1",
+        "path": "/path/to/the/testlocation/folder",
+        "backup_path": "/path/to/backup/folder",
+        "frequency": 1,
+        "expire": 31,
+        "__COMMENT__": "The Frequency/Expire is given in days. The program should be started as often as selected, e.g. with 2, the program has to be started at least every two days."
+    }
+]}

pybackup.py

@@ -1,2 +1,29 @@
 #!/usr/bin/python3
 
+import sys
+import json
+
+#CONFIGURATION_PATH = "/etc/pybackup.conf"  # for "production"
+CONFIGURATION_PATH = "pybackup.conf"  # for testing
+
+def log(message: str, log_level: int) -> bool:
+    assignments = {0: "DEBUG", 1: "VERBOSE", 2: "INFO", 3: "ERROR", 4: "FATAL"}
+    if(log_level not in assignments):
+        return False  # show that something went wrong
+    print(f"[{assignments[log_level]}] {message}")
+    return True
+
+if not __name__ == "__main__":  # just to make sure this program isn't used as a module
+    print(f"[{sys.argv[0]}]: THIS BACKUP PROGRAM IS NOT A PYTHON MODULE!")
+    exit(0)
+
+conf_f = open(CONFIGURATION_PATH, "r")
+try:
+    conf = json.load(conf_f)
+except json.decoder.JSONDecodeError:
+    log("The configuration file is corrupted", 3)
+    exit(1)
+conf_f.close()
+
+
+print(conf)