This commit adds support for byte compiling lua configuration files.
It's enabled by default (if byte compiling is enabled at all) and can be
disabled with `performance.byteCompileLua.configs` toggle.
To implement this feature `extraFiles.<name>.finalSource` internal
read-only option is introduced. `source` option cannot be used because
it's user configurable. In order to access the values of the
`performance.byteCompileLua` options, parent config is added to
specialArgs of extraFiles submodule. Then the usages of `source` option
changed to `finalSource` in all relevant places (filesPlugin and
wrappers).
Added more helpers for various cases of byte compiling:
* `byteCompileLuaFile` byte compiles lua file
* `byteCompileLuaHook` is a setup hook that byte compiles all lua files
* `byteCompileLuaDrv` overrides derivation by adding byteCompileLuaHook
to it
Added tests to validate that extraFiles specified by various methods are
handled correctly. Added a separate home-manager test, that is intended
to validate that extraFiles propagated to wrapper modules are correctly
byte compiled.
* add `performance.byteCompileLua.enable` toggle to enable or disable
all byte compiling features
* add `performance.byteCompileLua.initLua` toggle to enable or
disable byte compiling of init.lua
* add `writeByteCompiledLua` helper for saving byte compiled lua source
code to the nix store
* `nixvim-print-init` utility is always pointed to uncompiled init.lua
* add tests
plenary.nvim is often pulled as a dependency of other plugins.
It has filetype definitions in `data/plenary/filetypes` directory.
Even though I don't think there are plugins using it instead of
vim.filetype, but it should be no harm to add this directory by default.
