[map_io] Replace std logs by rclcpp logs

[doisyg]

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Basic Info

Info	Please fill out this column
Ticket(s) this addresses
Primary OS tested on	Ubuntu
Robotic platform tested on	Dexory's bot
Does this PR contain AI generated software?	No

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Description of contribution in a few bullet points

Replaced all the "std::cout" calls in map_io.cpp by their RCLCPP_(DEBUG/INFO/WARN/ERROR) equivalent.
We call a lot loadMapYaml externaly in our application and the verbose debug logs were polluting our log console.

Description of documentation updates required from your changes

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Future work that may be required in bullet points

For Maintainers:

• Check that any new parameters added are updated in docs.nav2.org
• Check that any significant change is added to the migration guide
• Check that any new features OR changes to existing behaviors are reflected in the tuning guide
• Check that any new functions have Doxygen added
• Check that any new features have test coverage
• Check that any new plugins is added to the plugins page
• If BT Node, Additionally: add to BT's XML index of nodes for groot, BT package's readme table, and BT library lists

[codecov]

Codecov Report

Attention: Patch coverage is 85.29412% with 5 lines in your changes missing coverage. Please review.

Files with missing lines	Patch %	Lines
nav2_map_server/src/map_io.cpp	85.29%	5 Missing ⚠️

Files with missing lines	Coverage Δ
nav2_map_server/src/map_io.cpp	91.28% <85.29%> (-1.40%)	⬇️

... and 4 files with indirect coverage changes

[SteveMacenski]

A couple of details to change, but LGTM