refactor(types): move add_chunk add_match to Set

[hanxiao]

Breaking Change #1337

• add_chunk and add_match are removed
• Refactor Document with the newly introduced classes, including UniqueId, ChunkSet, DocumentSet, MatchSet

[codecov]

Codecov Report

Merging #1343 (84d57cc) into master (79064e6) will increase coverage by 0.14%.
The diff coverage is 91.20%.

@@            Coverage Diff             @@
##           master    #1343      +/-   ##
==========================================
+ Coverage   83.25%   83.39%   +0.14%     
==========================================
  Files         101      103       +2     
  Lines        6717     6812      +95     
==========================================
+ Hits         5592     5681      +89     
- Misses       1125     1131       +6     

Impacted Files	Coverage Δ
jina/types/request/__init__.py	91.89% <72.00%> (-4.15%)	⬇️
jina/types/document/uid.py	84.74% <78.94%> (-2.76%)	⬇️
jina/drivers/craft.py	100.00% <100.00%> (ø)
jina/drivers/evaluate.py	98.21% <100.00%> (+0.03%)	⬆️
jina/drivers/index.py	95.00% <100.00%> (ø)
jina/drivers/rank.py	97.22% <100.00%> (+0.34%)	⬆️
jina/drivers/search.py	94.73% <100.00%> (+0.09%)	⬆️
jina/excepts.py	100.00% <100.00%> (ø)
jina/types/document/__init__.py	96.87% <100.00%> (+0.29%)	⬆️
jina/types/querylang/__init__.py	90.47% <100.00%> (+1.08%)	⬆️
... and 34 more

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[nan-wang]

Right now, there are two functions for adding a chunk/match to the document. I'd suggest removing add().

There should be one-- and preferably only one --obvious way to do it.
The Zen of Python

with Document() as d:
    c1 = d.chunks.append()
    c1.id = f'1:0>16'
    c2 = d.chunks.add()
    c2.id = f'2:0>16'