feat: add override_content_type

[G-XD]

fix #2724

[Xuanwo]

error: this function has too many arguments (8/7)
   --> core/src/services/s3/core.rs:242:5
    |
242 | /     pub fn s3_get_object_request(
243 | |         &self,
244 | |         path: &str,
245 | |         range: BytesRange,
...   |
250 | |         if_match: Option<&str>,
251 | |     ) -> Result<Request<AsyncBody>> {
    | |___________________________________^
    |
    = note: `-D clippy::too-many-arguments` implied by `-D warnings`
    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#too_many_arguments

Ooops, maybe we can fix this by passing OpRead instead.

[G-XD]

error: this function has too many arguments (8/7)
   --> core/src/services/s3/core.rs:242:5
    |
242 | /     pub fn s3_get_object_request(
243 | |         &self,
244 | |         path: &str,
245 | |         range: BytesRange,
...   |
250 | |         if_match: Option<&str>,
251 | |     ) -> Result<Request<AsyncBody>> {
    | |___________________________________^
    |
    = note: `-D clippy::too-many-arguments` implied by `-D warnings`
    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#too_many_arguments

Ooops, maybe we can fix this by passing OpRead instead.

Done.

[Xuanwo]

Great, thanks a lot!