docs: Simplify issue_template

• gitlab-web-ide MR: docs: Simplify issue_template (!410 - merged)
• gitlab MR: Update remote development issue templates (gitlab!180855 - merged)
• gitlab-org/workspaces/gitlab-workspaces-tools MR: chore: Update issue template (gitlab-org/workspaces/gitlab-workspaces-tools!25 - merged)
• gitlab-org/workspaces/gitlab-workspaces-proxy MR: chore: Add issue_template/Default (gitlab-org/workspaces/gitlab-workspaces-proxy!20 - merged)
• gitlab-org/gitlab-web-ide-vscode-fork MR: chore: Add issue_templates (gitlab-web-ide-vscode-fork!111 - merged)

What does this MR do and why?

This MR attempts to simplify the issue template so that it's a bit more inviting to the wider community.