Move java sources and tests into a single tree

[shs96c]

This emphasizes that all the java code is inter-related. We make use
of bazel to avoid introducing Java 8 incompatible changes, and bazel's
visibility rules to ensure that generated jars only contain what they
should.

Description

Move all the java code into a single place

Motivation and Context

Because it's nice to have everything in one place.

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)

Checklist

• I have read the contributing document.
• My change requires a change to the documentation.
• I have updated the documentation accordingly.
• I have added tests to cover my changes.
• All new and existing tests passed.

[codecov-commenter]

Codecov Report

Merging #9710 (32f2672) into trunk (2aea999) will decrease coverage by 0.02%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##            trunk    #9710      +/-   ##
==========================================
- Coverage   44.01%   43.99%   -0.03%     
==========================================
  Files          83       83              
  Lines        5443     5441       -2     
  Branches      245      245              
==========================================
- Hits         2396     2394       -2     
  Misses       2802     2802              
  Partials      245      245              

Impacted Files	Coverage Δ
py/selenium/webdriver/common/log.py	29.57% <0.00%> (-0.98%)	⬇️
py/selenium/webdriver/remote/webdriver.py	33.90% <0.00%> (-0.13%)	⬇️

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[diemol]

small_tests and javadoc jobs are failing

[sonarqubecloud]

SonarCloud Quality Gate failed.   

34 Bugs
0 Vulnerabilities
33 Security Hotspots
1817 Code Smells

0.0% Coverage
1.1% Duplication