feat: add otel ready to use image #399

Job	Run time
generate-matrix	11s
PHP FPM 8.1 on amd64	42s
PHP FPM 8.1 on arm64	44s
PHP FPM 8.2 on amd64	21s
PHP FPM 8.2 on arm64	23s
PHP FPM 8.3 on amd64	41s
PHP FPM 8.3 on arm64	24s
Generate Docker Manifest for PHP 8.1	19s
Generate Docker Manifest for PHP 8.2	14s
Generate Docker Manifest for PHP 8.3	14s
FPM with OpenTelemetry	21s
Build Caddy 8.1	1m 17s
Build Caddy 8.2	1m 33s
Build Caddy 8.3	1m 4s
Build Caddy ${{ matrix.php }} with OpenTelemetry	0s
Test Image	1m 51s
	10m 19s

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