Fixes #384 - Add a percentage and current limit when running in report mode

[derrix060]

Summary

Fixes #384

The idea here is to improve the visualization of the reporting
by adding not only the usage, but the limit and how close to the
limit it is.

Also, to make it easier to read, print it all in a table format.

Example before:

EC2/All F Spot Instance Requests                                          0
EC2/All G Spot Instance Requests                                          0
EC2/All Inf Spot Instance Requests                                        0
EC2/All P Spot Instance Requests                                          0
EC2/All Standard (A, C, D, H, I, M, R, T, Z) Spot Instance Requests       0
EC2/All X Spot Instance Requests                                          0
EC2/Elastic IP addresses (EIPs)                                           0
EC2/Max active spot fleets per region                                     0
EC2/Max launch specifications per spot fleet                              <unknown>
EC2/Max target capacity for all spot fleets in region                     0
EC2/Max target capacity per spot fleet                                    <unknown>
EC2/Rules per VPC security group                                          max: sg-0648da97fdeebf980=102 (sg-0df2ad106237174ea=1, sg-07e5e4f72cea0dfe5=1, sg-0b9911c871252d8e7=1, sg-0d055747ec7c4140e=1, sg-09551693a5250b7f4=1, sg-0781c381e1b5d378a=1, sg-0fd94d543ec6cf4ee=1, sg-05e714614de7941cd=1, sg-03cc3b695a6366ffd=1, sg-083eae2676c6f8b92=1, sg-0dc2ee2f21505bf2c=1, sg-0e1729f5b07df6416=1, sg-0de5f793ac0da38e7=1, sg-0d79228bbb3f97b6d=1, sg-0c7bcbb474d8afbf5=1, sg-0d6aa6e6209d923b5=1, sg-086b6c19c0860460b=1, sg-0c56e7af849a12622=1, sg-086a3c13d414aef8b=1, sg-0853c55cd9df708de=1, sg-0e1ed9e1ceca720a1=1, sg-099ef683e4d35e2ee=1, sg-0adc28eb7faa40ecf=1, sg-0dabf1e2c30f5998f=1, sg-06aedf016149fbe14=1, sg-0f9148df50a48a291=1, sg-006e95a00de69f1b8=1, sg-0f9f697bf9ef106a5=1,

Example after:

┌──────────────────────────────────────────────────────────────────────────┬───────────────────────┬───────────┬───────────┬───────────┐
│ Service Limit                                                            │ Resource              │   Usage # │ Usage %   │ Limit     │
├──────────────────────────────────────────────────────────────────────────┼───────────────────────┼───────────┼───────────┼───────────┤
│ EC2/All F Spot Instance Requests                                         │ -                     │         0 │ 0 %       │ 128       │
│ EC2/All G Spot Instance Requests                                         │ -                     │         0 │ -         │ <unknown> │
│ EC2/All Inf Spot Instance Requests                                       │ -                     │         0 │ 0 %       │ 64        │
│ EC2/All P Spot Instance Requests                                         │ -                     │         0 │ -         │ <unknown> │
│ EC2/All Standard (A, C, D, H, I, M, R, T, Z) Spot Instance Requests      │ -                     │         0 │ 0 %       │ 640       │
│ EC2/All X Spot Instance Requests                                         │ -                     │         0 │ 0 %       │ 128       │
│ EC2/Elastic IP addresses (EIPs)                                          │ -                     │         0 │ -         │ <unknown> │
│ EC2/Max active spot fleets per region                                    │ -                     │         0 │ -         │ <unknown> │
│ EC2/Max target capacity for all spot fleets in region                    │ -                     │         0 │ -         │ <unknown> │
│ EC2/Rules per VPC security group                                         │ sg-058d83cc259d4e69c  │         3 │ 2 %       │ 120       │
│ EC2/Rules per VPC security group                                         │ sg-0783065c4d2b78c83  │         3 │ 2 %       │ 120       │
│ EC2/Rules per VPC security group                                         │ sg-0df2ad106237174ea  │         1 │ 1 %       │ 120       │
│ EC2/Rules per VPC security group                                         │ sg-07e5e4f72cea0dfe5  │         1 │ 1 %       │ 120       │
│ EC2/Rules per VPC security group                                         │ sg-0b9911c871252d8e7  │         1 │ 1 %       │ 120       │
│ EC2/Rules per VPC security group                                         │ sg-0229a5ed0b61ce2bd  │         2 │ 2 %       │ 120       │
│ EC2/Rules per VPC security group                                         │ sg-0b25ba5186ce99117  │         2 │ 2 %       │ 120       │

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