Fixes and refactoring (#59)

* Input url list: Fix bad Windows behavior

* Minor output fix

* Fix all download issues
  - downloads are synchronous again
  - fix progress bar (fix #39)
  - nuke fluent and switch to a bug-free ffmpeg module (fessonia)

* Move destreamer process events to a new file, we may add more in the future, lets give them their own space

* Destreamer: Release packages and builder script

ETA when? :P

* Clean up

* Implement yargs checks and add --videoUrlsFile option

* Refactor error handling
  - Human readable
  - No magic numbers

* Handle mkdir error
  - remove reduntant message

* gitignore: don't add hidden files

* Implement --outputDirectories

This gives us more flexibility on where to save videos

..especially if your videos have all the same name <.<

* Rename utils -> Utils

* Fix tests

don't import yargs on files other than main

* Create scripts directory

* Update make_release path

* Fix typo

* Create CONTRIBUTING.md

Co-authored-by: kylon <kylonux@gmail.com>

src/Events.ts

@@ -0,0 +1,27 @@
+import { Error, ERROR_CODE } from './Errors';
+
+import colors from 'colors';
+
+/**
+ * This file contains global destreamer process events
+ *
+ * @note SIGINT event is overridden in downloadVideo function
+ *
+ * @note function is required for non-packaged destreamer, so we can't do better
+ */
+export function setProcessEvents() {
+    // set exit event first so that we can always print cute errors
+    process.on('exit', (code) => {
+        if (code == 0)
+            return;
+
+        const msg = code in Error ? `\n\n${Error[code]} \n` : `\n\nUnknown error: exit code ${code} \n`;
+
+        console.error(colors.bgRed(msg));
+    });
+
+    process.on('unhandledRejection', (reason) => {
+        console.error(colors.red(reason as string));
+        process.exit(ERROR_CODE.UNHANDLED_ERROR);
+    });
+}