Update Octicons to v10 (#12240)

* Update Octicons to v10

Besides a few renames, these icons are no longer present in v10 that we've
used, so had to change:

file-symlink-directory -> file-submodule
internal-repo -> repo
repo-force-push -> repo-push
repo-template-private -> repo-template

Fixes: https://github.com/go-gitea/gitea/issues/11889
Ref: https://github.com/primer/octicons/releases/tag/v10.0.0

* add custom sliders svg for removed octicon-settings

* apply suggestion

* fix triangles and use play on admin dashboard

* add custom mirror svg

* add missing build files

* unify custom svgs

* move to octicon-repo-clone to gitea-mirror

* use octicon-x on conflicts

* tweak timeline icons

* tweak comment buttons

* update settings icon to octicons v1

* switch to octicon-mirror and octicon-tools

* replace two wiki buttons with octicons

* remove whitespace in svg sources

* Fix filepath basename on Windows for SVG bindata (#12241)

* move octicons to devDependencies

* move back to dependencies

* move svgo to devDependencies again

Co-authored-by: Cirno the Strongest <1447794+CirnoT@users.noreply.github.com>
Co-authored-by: techknowlogick <techknowlogick@gitea.io>

public/img/svg/octicon-person.svg

@@ -1 +1 @@
-<svg viewBox="0 0 12 16" class="svg octicon-person" width="16" height="16" aria-hidden="true"><path fill-rule="evenodd" d="M12 14.002a.998.998 0 01-.998.998H1.001A1 1 0 010 13.999V13c0-2.633 4-4 4-4s.229-.409 0-1c-.841-.62-.944-1.59-1-4 .173-2.413 1.867-3 3-3s2.827.586 3 3c-.056 2.41-.159 3.38-1 4-.229.59 0 1 0 1s4 1.367 4 4v1.002z"/></svg>
+<svg viewBox="0 0 16 16" class="svg octicon-person" width="16" height="16" aria-hidden="true"><path fill-rule="evenodd" d="M10.5 5a2.5 2.5 0 11-5 0 2.5 2.5 0 015 0zm.061 3.073a4 4 0 10-5.123 0 6.004 6.004 0 00-3.431 5.142.75.75 0 001.498.07 4.5 4.5 0 018.99 0 .75.75 0 101.498-.07 6.005 6.005 0 00-3.432-5.142z"/></svg>