IntelliJ IDEA 激活方式，包含一系列其他开发工具的激活方式
1.通过 工具激活码激活
a.进入 https://3.jetbra.in/ 选择一个链接进入
b.选择要激活的工具，下载蓝色地方jetbra.zip, 点击相应工具星号地方会复制激活码。
c.解压工具，按照里面readme文件指示操作即可
Operation guide:
1. add -javaagent:/path/to/ja-netfilter.jar=jetbrains to your vmoptions (manual or auto)
2. log out of the jb account in the 'Licenses' window
3. use key on page https://jetbra.in/5d84466e31722979266057664941a71893322460
4. plugin 'mymap' has been deprecated since version 2022.1
5. don't care about the activation time, it is a fallback license and will not expire
