[ISSUE] Better package split for qt5-sql and sql plugins

[krab <krab@users.noreply.github.com>]

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New issue by krab on void-packages repository

https://github.com/void-linux/void-packages/issues/34803

Description:
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### System

* xuname:  
  `Void 5.15.11-xanmod1_1 x86_64 GenuineIntel notuptodate rrFFF`
* package:  
  `qt5-sql-5.15.3+20211001_1`

I'm building a local package for qt5 software that uses qt5sql-sqlite plugin in it sources. So currently I have to specify all qt5-sql plugins like `qt5-plugin-sqlite` etc. in `template` file to make package. Because if you look at `Qt5SqlConfig.cmake` file, it uses `GLOB` CMake function: 
```
    # In Qt 5.15 the glob pattern was relaxed to also catch plugins not literally named Plugin.
    # Define QT5_STRICT_PLUGIN_GLOB or ModuleName_STRICT_PLUGIN_GLOB to revert to old behavior.
    if (QT5_STRICT_PLUGIN_GLOB OR Qt5Sql_STRICT_PLUGIN_GLOB)
        file(GLOB pluginTargets "${CMAKE_CURRENT_LIST_DIR}/Qt5Sql_*Plugin.cmake")
    else()
        file(GLOB pluginTargets "${CMAKE_CURRENT_LIST_DIR}/Qt5Sql_*.cmake")
    endif()
```
So it's trying to find every single `.so` file from `Qt5Sql_Q***DriverPlugin.cmake` file. But they don't exist, they separated into packages like `qt5-plugin-sqlite` etc. and configuration fails with:
```
macro(_qt5_Sql_check_file_exists file)
    if(NOT EXISTS "${file}" )
        message(FATAL_ERROR "The imported target \"Qt5::Sql\" references the file
   \"${file}\"
but this file does not exist.  Possible reasons include:
* The file was deleted, renamed, or moved to another location.
* An install or uninstall procedure did not complete successfully.
* The installation package was faulty and contained
   \"${CMAKE_CURRENT_LIST_FILE}\"
but not all the files it references.
")
    endif()
endmacro()
```
The solution I'm suggesting is: 
- [ ] Move `Qt5SqlConfig.cmake Qt5SqlConfigVersion.cmake` from `/usr/lib/cmake/Qt5Sql/`  (`qt5-sql` package) into `qt5-sql-devel` package.
- [ ] Move all `Qt5Sql_QMYSQLDriverPlugin.cmake Qt5Sql_QODBCDriverPlugin.cmake Qt5Sql_QPSQLDriverPlugin.cmake Qt5Sql_QSQLiteDriverPlugin.cmake Qt5Sql_QTDSDriverPlugin.cmake` from `qt5-sql` package into new subpackages 
for example:  `qt5-plugin-sqlite-devel` etc.

That way to build software, we can specify single `qt5-plugin-sqlite-devel` as `makedepends` and `qt5-plugin-sqlite` as `depends` and don't list all of qt5sql plugins in template.