Added Isolation concept

[asmyasnikov]

Pull request type

Please check the type of change your PR introduces:

• Bugfix
• Feature
• Code style update (formatting, renaming)
• 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]

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: v3.108.0 (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 70.94%. Comparing base (4ebb2e4) to head (4a76df9).

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

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #1739      +/-   ##
==========================================
- Coverage   71.19%   70.94%   -0.25%     
==========================================
  Files         383      384       +1     
  Lines       39140    39194      +54     
==========================================
- Hits        27864    27805      -59     
- Misses      10151    10251     +100     
- Partials     1125     1138      +13     

Flag	Coverage Δ
experiment	70.52% <22.58%> (-0.23%)	⬇️
go-1.21.x	70.81% <22.58%> (-0.27%)	⬇️
go-1.24.x	70.93% <22.58%> (-0.21%)	⬇️
integration	53.36% <22.58%> (-0.63%)	⬇️
macOS	38.22% <3.22%> (-0.09%)	⬇️
ubuntu	70.92% <22.58%> (-0.26%)	⬇️
unit	38.25% <3.22%> (-0.07%)	⬇️
windows	38.23% <3.22%> (-0.08%)	⬇️
ydb-24.1	51.07% <22.58%> (-0.59%)	⬇️
ydb-24.2	51.18% <22.58%> (-0.63%)	⬇️
ydb-24.3	51.51% <22.58%> (-0.71%)	⬇️
ydb-24.4	51.64% <22.58%> (-0.60%)	⬇️
ydb-25.1	53.29% <22.58%> (-0.56%)	⬇️
ydb-nightly	70.52% <22.58%> (-0.23%)	⬇️

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