Add redundant data type

[oAGoulart]

Issue

Create a type (BLOCK 3) to handle split of codewords into blocks/groups and generate ECC.

Overview

What needs to be changed

Legend:
colors:

• blue (no changes)
• brown (major changes)
• red (not implemented yet).

blocks:

1. main logic
2. qrcode_t
3. qrdata_t
4. qrmask_t

Progress

• Add qrdata_t skeleton
• Move qrinfo_t out of quickresponse.c
• Instantiate data and ecc heap arrays
• Split subset bits into blocks
• Generate ecc for each block
• Add group/block iterator

[oAGoulart]

architecture overview

                                 cstr                                          
           ┌──────────────────────────────────────────────────┐                
           │encoded data                                      │                
           └───────┬───────────────┬────────────────┬─────────┘                
                   │               │                │                          
                   │               │                │                          
                   │               │                │                          
                   │               │                │                          
        ┌──────────┘               │                └──────────┐               
        │                          │redundant                  │               
        │                          │data                       │               
 ┌─     │    ─┐             ┌─     │     ─┐             ┌─     │     ─┐        
 │┌─────▼────┐│worker 1     │┌─────▼─────┐│worker 2     │┌─────▼─────┐│worker N
 ││block size││             ││           ││             ││           ││        
 │└──────────┘│             │└───────────┘│             │└───────────┘│        
 │            │             │             │             │             │        
 │┌───────┐   │             │┌───────┐    │             │┌──────┐     │        
 ││ecc    │   │             ││ecc    │    │             ││ecc   │     │        
 │└───────┘   │             │└───────┘    │             │└──────┘     │        
│└─          ─┘             └─           ─┘             └─           ─┘│       
└──────────────────────────────────────────────────────────────────────┘       
                                vector