feat: session.Execute without TxControl (default - serializableRW)

[Albitko]

Fix Issue : #694
@asmyasnikov I hope I understood you correctly

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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?

Now session.Execute has following interface

Execute(
  ctx context.Context,
  tx *TransactionControl,
  query string,
  params *QueryParameters,
  opts ...options.ExecuteDataQueryOption,
) (txr Transaction, r result.Result, err error)

Issue Number: #694

What is the new behavior?

session.Execute interface will look like

Execute(
  ctx context.Context,
  query string,
  params *QueryParameters,
  opts ...options.ExecuteDataQueryOption,
) (txr Transaction, r result.Result, err error)

by default TransactionControl will be set to serializableRW
If a different TransactionControl value needs to be set,
it can be set using the WithTxControl function through the context

example:

_, res, err := s.Execute(table.WithTxControl(ctx, readTx), query, nil)

Other information

It seems this might break backwards compatibility and I'm not sure about the next version in the CHANGELOG.md.

[asmyasnikov]

It is breaking change =(
I think this PR I will not merge into master on v3
But I will use your idea for next service (Query) and in Table v4

[Albitko]

It is breaking change =(
I think this PR I will not merge into master on v3
But I will use your idea for next service (Query) and in Table v4

I have no idea how to remove TxControl from the Execute interface and maintain compatibility.

Was this change intended in some other way or is the issue not relevant yet?