Chore and bugfix/fix thumbnail upload and update dependency versions

[matevskial]

Here I list the coomits made by this PR to better understand what was done:

• Update .gitignore to ignore IDE-specific files and project-specific files
• Delete dist folder This is a folder generated during build process of older version if this project. Currently, we don't build this project in any way and generally, build artifacts are not commited on git
• Fix uploading episode cover art(thumbnail) by updating selector for image upload input
• Update dependencies for dotenv, puppeteer, youtube-dl-exec to latest version and fix breaking changes in code

[matevskial]

@TheJoin95 Could you elaborate please? IF someone cloned the repo before this PR, then, normally, people sync their repos with latest changes from master before making changes in the code, right?