John Niang a94c0c7f85 Add property halo.use-absolute-permalink to control permalink generation (#3772) ... #### What type of PR is this? /kind improvement /kind api-change /area core /milestone 2.5.x #### What this PR does / why we need it: Add property `halo.use-absolute-permalink`(default is `false`) to control permalink generation. Leave `halo.external-url` as `null` by default. Meanwhile, I enhanced `ExternalUrlSupplier#getURL` to get URL from not only properties but only http request. #### How to use it? ```yaml halo: use-absolute-permalink: false ``` Or: ```yaml halo: external-url: https://halo.run/ use-absolute-permalink: false ``` Or: ```yaml halo: external-url: https://halo.run/ use-absolute-permalink: true ``` #### Which issue(s) this PR fixes: Fixes https://github.com/halo-dev/halo/issues/3762 #### Special notes for your reviewer: #### Does this PR introduce a user-facing change? ```release-note 新增是否生成相对地址的配置 ```		2023-04-19 07:54:24 +00:00
..
src	Add property halo.use-absolute-permalink to control permalink generation (#3772)	2023-04-19 07:54:24 +00:00
build.gradle	Support publishing to maven central repository (#3767)	2023-04-18 14:28:23 +08:00