Add seeking-approval label to issue templates

[ErnWong]

Is your feature request related to a problem? Please describe.
As a project maintainer, I want the seeking-approval label to be automatically applied to newly created issues, so that contributors are reminded to not start working on issues until we made sure they are valid and appropriate.

Describe the solution you'd like
Append ,seeking-approval to the labels field of the two issue templates.

Describe alternatives you've considered
Not using labels, and rather just have people comment casually on the issues.

Additional context
This is just my suggestion - feel free to disagree below :)
I was also thinking that we could use Github projects to create the backlogs for the frontend and backend teams so our teammates know what tasks are prioritised and ready (is this overkill?).

[timovv]

I approve

Edit: not sure if we should count this as a 1-approval issue since we've already set up the issue template?

[ErnWong]

Edit: not sure if we should count this as a 1-approval issue since we've already set up the issue template?

Good point. I'll wait for 3.