New line for B0 -> pi+ pi- pi0 ll

Description

• Adds new lines for B0 -> pi+ pi- pi0 ll
• Depends on !4163 (merged)

Rates

All RD lines

	total	passed	rate
Hlt2RD_BdToOmegaResolvedPi0MuMu	568000	1	2.27058
Hlt2RD_BdToOmegaMergedPi0MuMu	568000	0	0

Bandwidth

The test was ran over 568000 entries and the file sizes were:

Before: 650 Mb => 256 Mb
After : 575 Mb => 228 Mb

The compression was done with zstd -3. The input rate is 1.3 MHz.
The bandwith difference is -64 Mb.