Adds file handle in OpenFile and ReleaseFileHandle logs

[pat-vish]

Description

As of now OpenFile and ReleaseFileHandle logs do not have file handles. In order to analyse logs, one needs to know which handle is assigned to a file when it is opened and when closing which handle is being released.

Link to the issue in case of a bug fix

NA

Testing Details

1. Manual - Manually verified with GCSFuse that logs are printing file handles as expected:

{"timestamp":{"seconds":1717657690,"nanos":285345660},"severity":"TRACE","message":"fuse_debug: Op 0x0000001a        connection.go:420] <- OpenFile (inode 2, PID 1159034)"}
{"timestamp":{"seconds":1717657690,"nanos":285426200},"severity":"TRACE","message":"fuse_debug: Op 0x0000001a        connection.go:513] -> OK (Handle 1)"}

{"timestamp":{"seconds":1717657690,"nanos":285835240},"severity":"TRACE","message":"fuse_debug: Op 0x0000001e        connection.go:420] <- ReleaseFileHandle (PID 0, Handle 1)"}

2. Unit tests - NA
3. Integration tests - NA