[C++][SIMD] Avoid one-definition-rule violation of `arrow::internal::BitmapWriter` without depending on `-O2`

### Describe the enhancement requested

Contexts:

* https://github.com/apache/arrow/issues/31132#issuecomment-1378082076
* GH-14342
* GH-36685

We have runtime SIMD dispatch feature. For example, it's used in `cpp/src/parquet/level_conversion.cc` to run BMI2 based `DefLevelsToBitmap` implementation if available.

`DefLevelsToBitmap` (`DefLevelsToBitmapSimd`) is implemented in `cpp/src/parquet/level_conversion_inc.h` and it's built with/without BMI2. `DefLevelsToBitmapSimd` uses `arrow::internal::BitmapWriter`. If `arrow::internal::BitmapWriter` in `DefLevelsToBitmapSimd` is not inlined, one-definition-rule violation is happen. If it's happen, `libparquet.dylib` has two `BitmapWriter` definitions for with/without BMI2. If BMI2 version `BitmapWriter` is used on BMI2 unavailable machine, "illegal opcode" is happen.

GH-14342 resolved this by forcing to use `-O2` to enforce inlining. But it doesn't work with Homebrew. Because Homebrew overrides `-O*` specified by us.

If we can avoid one-definition-rule violation of `arrow::internal::BitmapWriter` without depending on `-O2`, we can provide a Homebrew bottle that can use the BMI2 based implementation on machines that support BMI2.

### Component(s)

C++