feat(memory): Implement update_table for MemoryCatalog

[hsingh574]

My initial motivation was to work on #1322, but for that the MemoryCatalog needs to support update_table, so this is that implementation, verified with a few basic tests.

There's more tests to add to actually complete #1322, but I wanted to add those in a separate PR. There's also some missing categories of tests (e.g. failed and successful requirements, concurrent updates, etc) that can be added on top of this.

This is my first PR in the project (and Rust as well) so looking forward to pointers.

cc: @jonathanc-n @liurenjie1024 @Xuanwo @CTTY I think you all have context.

[liurenjie1024]

Hi, @hsingh574 Thanks for contributing. I've created #1382 to add initial support for write, which also include a framework for transaction to execute. I think it should be part of #1382

[hsingh574]

Hi, @liurenjie1024 thanks for taking a look. Regarding the commit path functionality mentioned in #1382 , do you think there's anything blocking this PR? I'm also unsure about the method in TableCommit to apply changes to TableMetadata to create a new TableMetadata, seems to me the existing methods are sufficient.