Prepare v2.1.0, axmol main repo was rebased

[halx99]

Predicated rebasing duration

12/5/2023 T21:30+08:00~12/7/2023 T23:59+08:00, please don't create pull request before rebase finished.

Checklist

• create a backup fork to halx99/axmol-archived done, all release tags before v2.1.0 LTS, please visit https://github.com/halx99/axmol-archived/releases
• squash all commits before 2019-11-23T14:08, the create date of axmol: https://api.github.com/repos/axmolengine/axmol (git rebase -i seems not work, will report many conflicits and hard to resolving)
• exclude thirdparty, external, binary files, tools/fbx-conv when squash
• exclude optional thirdparty sources from main repo SCM, download in cmake configure step
• exclude all prebuilt libs from main repo SCM, download in cmake configure step
• separate test content to a isolated repo: https://github.com/axmolengine/axmol-sample-assets
• separate site pages to a isolated repo: https://github.com/axmolengine/axmolengine.github.io

Purpose:

• reduce repo size
• make axmol contributors display on github page intuitive

Before rebase:

query repo size: git count-objects -vH

count: 1473
size: 10.27 MiB
in-pack: 507451
packs: 17
size-pack: 1.29 GiB
prune-packable: 45
garbage: 0
size-garbage: 0 bytes

After rebase (preview)

count: 0
size: 0 bytes
in-pack: 56449
packs: 1
size-pack: 68.10 MiB
prune-packable: 0
garbage: 0
size-garbage: 0 bytes

how to update

• reclone [recommanded]
• git pull --rebase origin dev