Split lfs size from repository size (#22900)

releated to #21820

- Split `Size` in repository table as two new colunms, one is `GitSize`
for git size, the other is `LFSSize` for lfs data. still store full size
in `Size` colunm.
- Show full size on ui, but show each of them by a `title`;  example:

![image](https://user-images.githubusercontent.com/25342410/218636251-e200f085-d7e7-4a25-9ff1-b586a63e07a9.png)

- Return full size in api response.

---------

Signed-off-by: a1012112796 <1012112796@qq.com>
Co-authored-by: Lunny Xiao <xiaolunwen@gmail.com>
Co-authored-by: silverwind <me@silverwind.io>
Co-authored-by: DmitryFrolovTri <23313323+DmitryFrolovTri@users.noreply.github.com>
Co-authored-by: Giteabot <teabot@gitea.io>

templates/repo/settings/options.tmpl

@@ -14,7 +14,7 @@
 				</div>
 				<div class="inline field">
 					<label>{{.locale.Tr "repo.repo_size"}}</label>
-					<span>{{FileSize .Repository.Size}}</span>
+					<span {{if not (eq .Repository.Size 0)}} data-tooltip-content="{{.Repository.SizeDetailsString}}"{{end}}>{{FileSize .Repository.Size}}</span>
 				</div>
 				<div class="inline field">
 					<label>{{.locale.Tr "repo.template"}}</label>