initial commit of EdgeCloudSim

EdgeCloudSim with default network model, mobility model,  load generator
model, edge orchestrator, and VM CPU utilization model

config/default_config.properties

@@ -0,0 +1,24 @@
+#default config file
+simulation_time=2
+warm_up_period=1200
+vm_load_check_interval=30
+vm_location_check_interval=30
+deep_file_log_enabled=false
+
+min_number_of_mobile_devices=50
+max_number_of_mobile_devices=250
+mobile_device_counter_size=25
+
+wan_propogation_delay=0.1
+lan_internal_delay=0.004
+wlan_bandwidth=300
+wan_bandwidth=20
+gsm_bandwidth=10
+
+mips_for_cloud=20000
+
+task_provisioning=NEXT_FIT
+
+attractiveness_L1_mean_waiting_time=60
+attractiveness_L2_mean_waiting_time=30
+attractiveness_L3_mean_waiting_time=15