Add Backblaze Driver (#32)

* Backblaze Driver

* Update action to work with new tests

* Fix minor issues

* Run Formatter + Switch to reqwest json parser

src/file_hosting/upload.rs

@@ -0,0 +1,41 @@
+use crate::file_hosting::authorization::UploadUrlData;
+use crate::file_hosting::FileHostingError;
+use serde::{Deserialize, Serialize};
+
+#[derive(Serialize, Deserialize, Debug, Clone)]
+#[serde(rename_all = "camelCase")]
+pub struct UploadFileData {
+    pub file_id: String,
+    pub file_name: String,
+    pub account_id: String,
+    pub bucket_id: String,
+    pub content_length: u32,
+    pub content_sha1: String,
+    pub content_md5: Option<String>,
+    pub content_type: String,
+    pub upload_timestamp: u64,
+}
+
+//Content Types found here: https://www.backblaze.com/b2/docs/content-types.html
+pub async fn upload_file(
+    url_data: UploadUrlData,
+    content_type: String,
+    file_name: String,
+    file_bytes: Vec<u8>,
+) -> Result<UploadFileData, FileHostingError> {
+    Ok(reqwest::Client::new()
+        .post(&url_data.upload_url)
+        .header(reqwest::header::AUTHORIZATION, url_data.authorization_token)
+        .header("X-Bz-File-Name", file_name)
+        .header(reqwest::header::CONTENT_TYPE, content_type)
+        .header(reqwest::header::CONTENT_LENGTH, file_bytes.len())
+        .header(
+            "X-Bz-Content-Sha1",
+            sha1::Sha1::from(&file_bytes).hexdigest(),
+        )
+        .body(file_bytes)
+        .send()
+        .await?
+        .json()
+        .await?)
+}