Resolves https://github.com/go-gitea/gitea/issues/28704
Example of an entry in the generated `APKINDEX` file:
```
C:Q1xCO3H9LTTEbhKt9G1alSC87I56c=
P:hello
V:2.12-r1
A:x86_64
T:The GNU Hello program produces a familiar, friendly greeting
U:https://www.gnu.org/software/hello/
L:GPL-3.0-or-later
S:15403
I:36864
o:hello
m:
t:1705934118
D:so:libc.musl-x86_64.so.1
p:cmd:hello=2.12-r1
i:foobar=1.0 !baz
k:42
```
the `i:` and `k:` entries are new.
---------
Co-authored-by: KN4CK3R <admin@oldschoolhack.me>
