feat(sharing): add custom share ID input and permission

[MuelNova]

Description / 描述

Frontend changes for custom share ID support (backend PR:
OpenListTeam/OpenList#XXXX).

• Add ID input field in manage share create/edit form (AddOrEdit.tsx)
• Add ID input in quick share dialog (Share.tsx) with maxLength=64
• Add new_id field to ShareUpdate type for renaming share IDs
• Add optional id field to Share type for custom ID on creation
• Add customize_share_id permission (bit 15) to UserPermissions
• Add i18n strings for ID placeholder and permission label

Motivation and Context / 背景

Random share IDs are hard to remember. This enables users with the
customize_share_id permission to set memorable custom IDs (e.g. my-photos) when
creating or editing shares.

Relates to OpenListTeam/OpenList#1806

How Has This Been Tested? / 测试

• Verified ID input renders in both manage share form and quick share dialog
• Verified customize_share_id permission checkbox renders in user management page

Checklist / 检查清单

• I have read the
  CONTRIBUTING
  document.
• I have formatted my code with go fmt or prettier.
• I have added appropriate labels to this PR (or mentioned needed labels in the
  description if lacking permissions).
  Labels needed: enhancement
• I have requested review from relevant code authors using the "Request review"
  feature when applicable.
• I have updated the repository accordingly (If it's needed).
  • OpenList-Frontend (this
    PR)
  • OpenList-Docs