[Feat] support custom tag color (#53)

[Feat] support custom tag color

[Delete] entry/styles/output.css

[refactor] refactoring use new design style (#52)

[refactor] refactoring use new design style

[Perf] format code by fmt

[Perf] format code by fmt

[Chore] remove useless code

[Feat] add language support (#51)

[Feat] add language support

[Perf] add useful comments for tags initialize function

[Fix] wrong tags parse

[Fix] throw an error when upsert tags

[Chore] format code style using cargo fmt util

[Perf] posts page

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feat: Update links.json for adding Airing's blog (#47)

[Perf] posts page

[Doc] ignore assets folder

[Fix] post detail deserilized

[Feat] finished tags interface

[Fix] fix wrong calculation logic of has_next

[Fix] wrong path of markdown file

[Feat] finished tags interface

[Feat] finished api tags insert function

[Refactor] site config package

[Fix] delete error

[Doc] update content about how to migrate database

[Feat] auto generate entity code by sea-orm cli

[Feat] migrate to sea-orm