Load file, Initialize Routing table

[ErikuNyang]

Functions that are done in 'Top_Read' commit.

• [x] Server
• [x] Read Topology File
• [x] Initialize Routing Table
• [x] Display Routing Table
  • Display in sorted order( small ID to big ID )
• [x] Menu
• [x] Update
• [x] Port binding

[ErikuNyang]

"prettytable" module needs to be installed to print table => 'pip3 install prettytable'

[ErikuNyang]

updated display function. Display in sorted order( small ID to big ID )