fix: nomercure build tag (#2212)
- Fixes nomercure tag build
- Conditionally addds the mercure route and mercure project import
Fixes https://github.com/php/frankenphp/issues/2209
I am by no means a go developer, feel free to use this or not :)
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Signed-off-by: tehmaestro <alexnegrila89@gmail.com>
Co-authored-by: Alexander Stecher <45872305+AlliBalliBaba@users.noreply.github.com>