enhancement(performance): Add more benchmark comparisons (#6233)

* Add new parse_json Wasm function

Signed-off-by: Luc Perkins <luc@timber.io>

* Add parse_json benchmark comparison

Signed-off-by: Luc Perkins <luc@timber.io>

* Fix formatting issue

Signed-off-by: Luc Perkins <luc@timber.io>

* Add test for new parse_json Wasm function

Signed-off-by: Luc Perkins <luc@timber.io>

* Add Lua JSON dependency to file tree

Signed-off-by: Luc Perkins <luc@timber.io>

* Clean up parse_json Wasm function

Signed-off-by: Luc Perkins <luc@timber.io>

* Fix Makefile misspelling

Signed-off-by: Luc Perkins <luc@timber.io>

* Fix Lua search path

Signed-off-by: Luc Perkins <luc@timber.io>

* Remove unused notes from parse_json Wasm function

Signed-off-by: Luc Perkins <luc@timber.io>

* Remove unnecessary fields logic in parse_json

Signed-off-by: Luc Perkins <luc@timber.io>

* Remove unused import in parse_json

Signed-off-by: Luc Perkins <luc@timber.io>

* Add add_fields test

Signed-off-by: Luc Perkins <luc@timber.io>

* Fix issue with transform missing from feature set

Signed-off-by: Luc Perkins <luc@timber.io>

* Add add_fields transform to language benches

Signed-off-by: Luc Perkins <luc@timber.io>

* Fix name of add_fields bench

Signed-off-by: Luc Perkins <luc@timber.io>

* Make Lua function more concise

Signed-off-by: Luc Perkins <luc@timber.io>