feat(bindings/c)!: Make features configurable via CMakeLists

[asukaminato0721]

Which issue does this PR close?

part of #4318.
Closes #4313.

Rationale for this change

What changes are included in this PR?

Enable build feature by option.

Are there any user-facing changes?

Enable build feature by option.

[asukaminato0721]

   Compiling opendal-c v0.0.0 (/home/runner/work/opendal/opendal/bindings/c)
error: the `Err`-variant returned from this function is very large
  --> src/operator.rs:89:6
   |
89 | ) -> core::Result<core::Operator> {
   |      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the `Err`-variant is at least 128 bytes
   |
   = help: try reducing the size of `opendal::Error`, for example by boxing large elements or replacing it with `Box<opendal::Error>`
   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#result_large_err
   = note: `-D clippy::result-large-err` implied by `-D warnings`
   = help: to override `-D warnings` add `#[allow(clippy::result_large_err)]`

error: could not compile `opendal-c` (lib) due to 1 previous error

[Xuanwo]

   Compiling opendal-c v0.0.0 (/home/runner/work/opendal/opendal/bindings/c)
error: the `Err`-variant returned from this function is very large
  --> src/operator.rs:89:6
   |
89 | ) -> core::Result<core::Operator> {
   |      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the `Err`-variant is at least 128 bytes
   |
   = help: try reducing the size of `opendal::Error`, for example by boxing large elements or replacing it with `Box<opendal::Error>`
   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#result_large_err
   = note: `-D clippy::result-large-err` implied by `-D warnings`
   = help: to override `-D warnings` add `#[allow(clippy::result_large_err)]`

error: could not compile `opendal-c` (lib) due to 1 previous error

Fixed in #6193

[Xuanwo]

Nice changes, thank you a lot!