Password protect settings

[elshimone]

Guidelines

• I have searched the issue tracker for open and closed issues that are similar to the feature request I want to file, without success.
• I have searched the documentation for information that matches the description of the feature request I want to file, without success.
• This issue contains only one feature request.

Problem Description

I would like to password protect the settings page to prevent my child from altering the parental control settings I have applied. This was mentioned in #1456 as being desirable as a separate PR.

Proposed Solution

Add a settings panel to allow a password to be set or cleared. When a password is set, it is stored as a setting. For this use case I am unsure if we need to encrypt the password in the settings. We could use bcrypt if desired.

My preference would be to lock all the settings, as even non-sensitive settings such as "use this invidious url" can render freetube unusable and I would rather not spend time working out what had been changed by my inquisitive child.

To keep things as simple as possible I am suggesting that the password can be changed by removing an existing password and setting a new one.

Alternatives Considered

Please let me know if you think I should add a confirmation password field. For my use case, I would probably skip this and not encrypt the password, so that I could reset it in the settings if I forgot it.

Issue Labels

new feature

Additional Information

I am happy to work on this issue.

[efb4f5ff-1298-471a-8973-3d47447115dc]

@elshimone do u want me to assign u to this?

[efb4f5ff-1298-471a-8973-3d47447115dc]

Just a note: Related #1086

[elshimone]

Yes please!

[efb4f5ff-1298-471a-8973-3d47447115dc]

Done! :)