Adds ConfigLoader to handle loading configurations parameters. Switches from conf.py to .conf files

teos/template.conf

@@ -0,0 +1,22 @@
+[bitcoind]
+btc_rpc_user = "user"
+btc_rpc_passwd = "passwd"
+btc_rpc_connect = "localhost"
+btc_rpc_port = 8332
+btc_network = "mainnet"
+
+# [zmq]
+feed_protocol = "tcp"
+feed_connect = "127.0.0.1"
+feed_port = 28332
+
+[teos]
+max_appointments = 100
+expiry_delta = 6
+min_to_self_delay = 20
+
+# [chain monitor]
+polling_delta = 60
+block_window_size = 10
+
+