### What changes were proposed in this pull request?
In the PR, I propose to support pushed down filters in Avro datasource V1 and V2.
1. Added new SQL config `spark.sql.avro.filterPushdown.enabled` to control filters pushdown to Avro datasource. It is on by default.
2. Renamed `CSVFilters` to `OrderedFilters`.
3. `OrderedFilters` is used in `AvroFileFormat` (DSv1) and in `AvroPartitionReaderFactory` (DSv2)
4. Modified `AvroDeserializer` to return None from the `deserialize` method when pushdown filters return `false`.
### Why are the changes needed?
The changes improve performance on synthetic benchmarks up to **2** times on JDK 11:
```
OpenJDK 64-Bit Server VM 11.0.7+10-post-Ubuntu-2ubuntu218.04 on Linux 4.15.0-1063-aws
Intel(R) Xeon(R) CPU E5-2670 v2 2.50GHz
Filters pushdown: Best Time(ms) Avg Time(ms) Stdev(ms) Rate(M/s) Per Row(ns) Relative
------------------------------------------------------------------------------------------------------------------------
w/o filters 9614 9669 54 0.1 9614.1 1.0X
pushdown disabled 10077 10141 66 0.1 10077.2 1.0X
w/ filters 4681 4713 29 0.2 4681.5 2.1X
```
### Does this PR introduce any user-facing change?
No
### How was this patch tested?
- Added UT to `AvroCatalystDataConversionSuite` and `AvroSuite`
- Re-running `AvroReadBenchmark` using Amazon EC2:
| Item | Description |
| ---- | ----|
| Region | us-west-2 (Oregon) |
| Instance | r3.xlarge (spot instance) |
| AMI | ami-06f2f779464715dc5 (ubuntu/images/hvm-ssd/ubuntu-bionic-18.04-amd64-server-20190722.1) |
| Java | OpenJDK8/11 installed by`sudo add-apt-repository ppa:openjdk-r/ppa` & `sudo apt install openjdk-11-jdk`|
and `./dev/run-benchmarks`:
```python
#!/usr/bin/env python3
import os
from sparktestsupport.shellutils import run_cmd
benchmarks = [
['avro/test', 'org.apache.spark.sql.execution.benchmark.AvroReadBenchmark']
]
print('Set SPARK_GENERATE_BENCHMARK_FILES=1')
os.environ['SPARK_GENERATE_BENCHMARK_FILES'] = '1'
for b in benchmarks:
print("Run benchmark: %s" % b[1])
run_cmd(['build/sbt', '%s:runMain %s' % (b[0], b[1])])
```
Closes#29145 from MaxGekk/avro-filters-pushdown.
Authored-by: Max Gekk <max.gekk@gmail.com>
Signed-off-by: Gengliang Wang <gengliang.wang@databricks.com>
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