[Logs SDK] LogProcessor, LogExporter class name

[esigo]

Fixes #1694 (issue)

Changes

exporters class names to use "*LogRecordExporter", to be in consistent with the file-names, and naming of their cmake/bazel targets:

ElasticsearchLogExporter to ElasticsearchLogRecordExporter
OStreamLogExporter to OStreamLogRecordExporter
OtlpGrpcLogExporter to OtlpGrpcLogRecordExporter
OtlpHttpLogExporter to OtlpHttpLogRecordExporter

And similarly for Processors:
BatchLogProcessor to BatchLogRecordProcessor
SimpleLogProcessor to SimpleLogRecordProcessor
MultiLogProcessor to MultiLogRecordProcessor

For significant contributions please make sure you have completed the following items:

• CHANGELOG.md updated for non-trivial changes
• Unit tests have been added
• Changes in public API reviewed

[codecov]

Codecov Report

Merging #1736 (068587d) into main (ec8895b) will decrease coverage by 0.02%.
The diff coverage is n/a.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1736      +/-   ##
==========================================
- Coverage   85.79%   85.77%   -0.01%     
==========================================
  Files         171      171              
  Lines        5212     5212              
==========================================
- Hits         4471     4470       -1     
- Misses        741      742       +1     

Impacted Files	Coverage Δ
sdk/src/trace/batch_span_processor.cc	90.63% <0.00%> (-0.78%)	⬇️

[owent]

LGTM

[lalitb]

LGTM. Thanks for the change.