ISSUE-124, add Line property to TableList.

[happsie]

The Line property will draw a Line after every content-row added to the list. The default spaceHeight is set to 1.0

Description

The Line property will draw a Line after every content-row added to the list. The default spaceHeight is set to 1.0

Related Issue

Resolves #124

Checklist

check with "x", if applied to your change

• All methods associated with structs has func (s *struct) method() {} name style.
• Wrote unit tests for new/changed features.
• Updated docs/doc.go
• Updated pkg/pdf/example_test.go
• Updated README.md
• Updated all examples inside internal/examples
• New public methods has comments upside them explaining what it does
• Executed go fmt github.com/johnfercher/maroto/... to format all files

[codecov-io]

Codecov Report

Merging #125 into dev will increase coverage by 0.41%.
The diff coverage is 100%.

@@            Coverage Diff             @@
##              dev     #125      +/-   ##
==========================================
+ Coverage   94.81%   95.22%   +0.41%     
==========================================
  Files           9        9              
  Lines         520      522       +2     
==========================================
+ Hits          493      497       +4     
+ Misses         22       21       -1     
+ Partials        5        4       -1

Impacted Files	Coverage Δ
pkg/props/prop.go	100% <ø> (ø)	⬆️
internal/tablelist.go	55.36% <100%> (+5.36%)	⬆️

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[johnfercher]

Very good, I will merge :)