Draft: Make Muon::TileID formattable with fmtlib

LCG 103a will have fmtlib 10 which is more picky than previous versions.

This MR implements a simple fmtlib customization for Muon::TileID needed to build Run2Support and Boole with LCG 103a.

Note: this is part of a pool related (not interdependent MRs), LHCb!4143 (merged), Run2Support!46 (merged), !397 (closed)

changed the description

mentioned in merge request LHCb!4143 (merged)

mentioned in merge request Run2Support!46 (merged)

added 2 commits

• 6ea5d7b9 - Make Muon::TileID formattable with fmtlib
• d154cfe6 - Fix compatibility with fmtlib 8

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added 1 commit

• de71a57a - Fix compilation with C++20

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closed