Missing prefix/"namespace" in C code

[inkeliz]

Affected plugin Most all of them

Describe the bug Some plugins uses C code and C doesn't have concept of "namespace". Some functions is exported without any prefix, which may lead to collisions.

Expected behavior We need to add some prefix, maybe the name of the library in Go. So, instead of fileRead it must be explorer_fileRead, or even gio_explorer_fileRead, and similar.