Add Rows and Cols methods to the Table component

[adrg]

Addresses #401

[codecov]

Codecov Report

Merging #402 into v3 will decrease coverage by 5.44%.
The diff coverage is 100%.

@@            Coverage Diff             @@
##               v3     #402      +/-   ##
==========================================
- Coverage   60.87%   55.43%   -5.45%     
==========================================
  Files         151      151              
  Lines       27491    27468      -23     
==========================================
- Hits        16736    15226    -1510     
- Misses      10365    10380      +15     
- Partials      390     1862    +1472

Impacted Files	Coverage Δ
pdf/creator/table.go	86.8% <100%> (-5.29%)	⬇️
pdf/creator/utils.go	55.55% <0%> (-22.23%)	⬇️
pdf/core/security/handlers.go	33.33% <0%> (-16.67%)	⬇️
pdf/model/optimize/image_ppi.go	59.7% <0%> (-16.42%)	⬇️
pdf/model/reader.go	48.34% <0%> (-15.17%)	⬇️
pdf/ps/exec.go	62.96% <0%> (-14.82%)	⬇️
pdf/ps/operations.go	53.45% <0%> (-13.84%)	⬇️
pdf/model/signature_handler.go	55.04% <0%> (-13.77%)	⬇️
pdf/core/stream.go	31.08% <0%> (-13.52%)	⬇️
pdf/extractor/image.go	66.08% <0%> (-13.05%)	⬇️
... and 94 more

---

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[codecov]

Codecov Report

Merging #402 into v3 will decrease coverage by 5.44%.
The diff coverage is 100%.

@@            Coverage Diff             @@
##               v3     #402      +/-   ##
==========================================
- Coverage   60.87%   55.43%   -5.45%     
==========================================
  Files         151      151              
  Lines       27491    27468      -23     
==========================================
- Hits        16736    15226    -1510     
- Misses      10365    10380      +15     
- Partials      390     1862    +1472

Impacted Files	Coverage Δ
pdf/creator/table.go	86.8% <100%> (-5.29%)	⬇️
pdf/creator/utils.go	55.55% <0%> (-22.23%)	⬇️
pdf/core/security/handlers.go	33.33% <0%> (-16.67%)	⬇️
pdf/model/optimize/image_ppi.go	59.7% <0%> (-16.42%)	⬇️
pdf/model/reader.go	48.34% <0%> (-15.17%)	⬇️
pdf/ps/exec.go	62.96% <0%> (-14.82%)	⬇️
pdf/ps/operations.go	53.45% <0%> (-13.84%)	⬇️
pdf/model/signature_handler.go	55.04% <0%> (-13.77%)	⬇️
pdf/core/stream.go	31.08% <0%> (-13.52%)	⬇️
pdf/extractor/image.go	66.08% <0%> (-13.05%)	⬇️
... and 94 more

---

Continue to review full report at Codecov.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update 3712670...4ee3858. Read the comment docs.