refactor: detach BaseExecutable from Recursivity

[JoanFM]

Changes introduced
Try to clarify the inheritance structure of FastRecursiveMixin and BaseRecursiveDriver by turniong the latter in another mixin.

Also try to change some Drivers into the new FastRecursiveMixin since seems to be an easy way to go.

Benefits

• Current classes using FastRecursiveMixin also inherit from BaseRecursiveDriver, which makes their inheritance structure very ambiguous
• Prepares the work for easy transition when possible from BaseRecursiveDriver to FastRecursiveMixin by putting recursivity traversal of the documents as a mixin deattaching from the core of an ExecutableDriver

[github-actions]

Latency summary

Current PR yields:

• 😶 index QPS at 1115, delta to last 3 avg.: +1%
• 🐢🐢 query QPS at 18, delta to last 3 avg.: -8%

Breakdown

Version	Index QPS	Query QPS
current	1115	18
1.0.1	1097	18
1.0.0	1104	20

Backed by latency-tracking. Further commits will update this comment.

[codecov]

Codecov Report

Merging #1939 (dd430ad) into master (e2971d2) will increase coverage by 2.72%.
The diff coverage is 100.00%.

@@            Coverage Diff             @@
##           master    #1939      +/-   ##
==========================================
+ Coverage   83.95%   86.67%   +2.72%     
==========================================
  Files         148      148              
  Lines        7092     7093       +1     
==========================================
+ Hits         5954     6148     +194     
+ Misses       1138      945     -193     

Impacted Files	Coverage Δ
jina/drivers/convertdriver.py	93.93% <100.00%> (ø)
jina/drivers/craft.py	100.00% <100.00%> (ø)
jina/drivers/encode.py	94.20% <100.00%> (ø)
jina/drivers/evaluate.py	98.27% <100.00%> (ø)
jina/drivers/multimodal.py	91.89% <100.00%> (+0.22%)	⬆️
jina/drivers/querylang/filter.py	100.00% <100.00%> (ø)
jina/drivers/querylang/reverse.py	100.00% <100.00%> (ø)
jina/drivers/querylang/select.py	89.65% <100.00%> (ø)
jina/drivers/querylang/slice.py	93.75% <100.00%> (ø)
jina/drivers/querylang/sort.py	100.00% <100.00%> (ø)
... and 10 more

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[nan-wang]

LGTM

[maximilianwerk]

I would not add the FastRecursiveMixin that often, but rather stay with the old one. Reason: When we change the traversal in the DocumentSet as a follow up, we don't need to fix that many drivers immediately. But I am also fine with merging away and using the SegmentDriver as an example how to do the following refactoring.

[JoanFM]

I would not add the FastRecursiveMixin that often, but rather stay with the old one. Reason: When we change the traversal in the DocumentSet as a follow up, we don't need to fix that many drivers immediately. But I am also fine with merging away and using the SegmentDriver as an example how to do the following refactoring.

Let's keep it as it is now, there are 2 or 3 now, and the change should be inmediate

[nan-wang]

LGTM👍