Merging hudi-trino-plugin (hudi repository) and hudi-trino-plugin (trino repository)

### Task Description

Trino team suggest to maintain a single plugin in hudi-repo itself. Instead of maintaining two copies in both upstream and downstream repos.

Ref slack thread : https://trinodb.slack.com/archives/C07ABNN828M/p1762844413673339?thread_ts=1762800825.055639&cid=C07ABNN828M

We need to first sync back changes that are in trino repo but not in hudi repo. And then update trino to import plugin from hudi repo only.

### Task Type

Code improvement/refactoring

### Related Issues

_No response_

Start by comparing the hudi-trino-plugin implementations in the Hudi and Trino repositories, then read the referenced Slack thread for the proposed ownership and integration details. Done means changes present only in the Hudi repository and Trino importing the plugin from there.

Written by the indexing model from the issue text.