Added Isolation concept

[asmyasnikov]

Pull request type

Please check the type of change your PR introduces:

• [ ] Bugfix
• [x] Feature
• [ ] Code style update (formatting, renaming)
• [x] Refactoring (no functional changes, no api changes)
• [ ] Build related changes
• [ ] Documentation content changes
• [ ] Other (please describe):

What is the current behavior?

Issue Number: N/A

What is the new behavior?

Other information

[github-actions[bot]]

github.com/ydb-platform/ydb-go-sdk/v3/query

compatible changes

Isolation: added OnlineRO: added OnlineROWithInconsistentReads: added SerializableRW: added SnapshotRO: added StaleRO: added

github.com/ydb-platform/ydb-go-sdk/v3/table

incompatible changes

Options.TxSettings: changed from *TransactionSettings to *TransactionSettings Session.BeginTransaction: changed from func(context.Context, *TransactionSettings) (Transaction, error) to func(context.Context, *TransactionSettings) (Transaction, error) TransactionSettings: changed from github.com/ydb-platform/ydb-go-sdk/v3/internal/tx.Settings to github.com/ydb-platform/ydb-go-sdk/v3/internal/tx.Options TxSettings: changed from func(...TxOption) *TransactionSettings to func(...TxOption) *TransactionSettings WithTxSettings: changed from func(*TransactionSettings) txSettingsOption to func(*TransactionSettings) txSettingsOption

summary

Base version: v3.108.1 (master) Cannot suggest a release version. Incompatible changes were detected.

[codecov-commenter]

Codecov Report

Attention: Patch coverage is 22.58065% with 48 lines in your changes missing coverage. Please review.

Project coverage is 70.96%. Comparing base (4b3e883) to head (263da45).

Files with missing lines	Patch %	Lines
internal/tx/isolation.go	0.00%	38 Missing :warning:
internal/tx/settings.go	52.38%	10 Missing :warning:

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #1739      +/-   ##
==========================================
- Coverage   71.02%   70.96%   -0.06%     
==========================================
  Files         383      384       +1     
  Lines       39152    39206      +54     
==========================================
+ Hits        27807    27823      +16     
- Misses      10205    10247      +42     
+ Partials     1140     1136       -4     

Flag	Coverage Δ
experiment	70.51% <22.58%> (-0.09%)	:arrow_down:
go-1.21.x	70.83% <22.58%> (-0.14%)	:arrow_down:
go-1.24.x	70.95% <22.58%> (-0.01%)	:arrow_down:
integration	53.50% <22.58%> (-0.41%)	:arrow_down:
macOS	38.22% <3.22%> (-0.06%)	:arrow_down:
ubuntu	70.96% <22.58%> (-0.06%)	:arrow_down:
unit	38.22% <3.22%> (-0.07%)	:arrow_down:
windows	38.21% <3.22%> (-0.06%)	:arrow_down:
ydb-24.1	51.33% <22.58%> (+0.08%)	:arrow_up:
ydb-24.2	51.28% <22.58%> (-0.37%)	:arrow_down:
ydb-24.3	51.79% <22.58%> (+0.03%)	:arrow_up:
ydb-24.4	51.75% <22.58%> (-0.01%)	:arrow_down:
ydb-25.1	53.39% <22.58%> (-0.05%)	:arrow_down:
ydb-nightly	70.51% <22.58%> (-0.09%)	:arrow_down:

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