[SPARK-34036][DOCS] Update ORC data source documentation

[dongjoon-hyun]

What changes were proposed in this pull request?

This PR aims to update SQL documentation about ORC data sources.

New structure looks like the following.

• ORC Implementation
• Vectorized Reader
• Schema Merging
• Zstandard
• Bloom Filters
• Columnar Encryption
• Hive metastore ORC table conversion
• Configuration

Why are the changes needed?

This document is not up-to-date. Apache Spark 3.2.0 can utilize new improvements from Apache ORC 1.6.6.

Does this PR introduce any user-facing change?

No, this is a documentation.

How was this patch tested?

Manual.

SKIP_API=1 jekyll build

---

BEFORE

---

AFTER

[dongjoon-hyun]

Could you review this please, @maropu , @viirya , @HyukjinKwon ?

[SparkQA]

Test build #133759 has finished for PR 31075 at commit b7baa0c.

• This patch passes all tests.
• This patch merges cleanly.
• This patch adds no public classes.

[SparkQA]

Kubernetes integration test starting
URL: https://amplab.cs.berkeley.edu/jenkins/job/SparkPullRequestBuilder-K8s/38347/

[SparkQA]

Kubernetes integration test status failure
URL: https://amplab.cs.berkeley.edu/jenkins/job/SparkPullRequestBuilder-K8s/38347/

[dongjoon-hyun]

The PR is updated. Thanks, @sunchao and @viirya .

[SparkQA]

Test build #133762 has finished for PR 31075 at commit d9279dc.

• This patch passes all tests.
• This patch merges cleanly.
• This patch adds no public classes.

[SparkQA]

Kubernetes integration test starting
URL: https://amplab.cs.berkeley.edu/jenkins/job/SparkPullRequestBuilder-K8s/38350/

[SparkQA]

Kubernetes integration test status success
URL: https://amplab.cs.berkeley.edu/jenkins/job/SparkPullRequestBuilder-K8s/38350/

[SparkQA]

Test build #133765 has finished for PR 31075 at commit 2024f01.

• This patch passes all tests.
• This patch merges cleanly.
• This patch adds no public classes.

[dongjoon-hyun]

Thank you, @viirya . Merged to master.

[HyukjinKwon]

late LGTM2