Add more profile information for external table plan time. Including init and finalize scan node time, getSplits time, create scan range time, get all partitions time and get all files for all partitions time. Also modified the Indentation to make it easier to read.
This is an example output of the new profile summary.
```
Execution Summary:
- Analysis Time: 3ms
- Plan Time: 26s885ms
- JoinReorder Time: N/A
- CreateSingleNode Time: N/A
- QueryDistributed Time: N/A
- Init Scan Node Time: 1ms
- Finalize Scan Node Time: 26s868ms
- Get Splits Time: 26s554ms
- Get PARTITIONS Time: 20s189ms
- Get PARTITION FILES Time: 6s289ms
- Create Scan Range Time: 314ms
- Schedule Time: 1s67ms
- Fetch Result Time: 56ms
- Write Result Time: 0ms
- Wait and Fetch Result Time: 57ms
```
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