Fix m680x instruction mappings

[historicattle]

Your checklist for this pull request

• I've read the guidelines for contributing to this repository.
• I made sure to follow the project's coding style.
• I've documented every RZ_API function and struct this PR changes.
• I've added tests that prove my changes are effective (required for changes to RZ_API).
• I've updated the Rizin book with the relevant information (if needed).
• I've used AI tools to generate fully or partially these code changes and I'm sure the changes are not copyrighted by somebody else.

Detailed description

• Fix m680x instruction mappings
• Make the CPU mode checks case insensitive
• Fixed m680xmode() to correctly return CS_MODE_M680X_HCS12X instead of returning RZ_CAPSTONE_HAS_M680X_HCS12X

Test plan
Updated the test in test/db/analysis/m680x since M680X_INS_JSR is correctly classified as a RZ_ANALYSIS_OP_TYPE_CALL

Closing issues
Partially addresses #5933

[codecov]

Codecov Report

❌ Patch coverage is 38.53211% with 67 lines in your changes missing coverage. Please review.
✅ Project coverage is 49.93%. Comparing base (6f2989f) to head (8418b0e).

Files with missing lines	Patch %	Lines
librz/arch/p/analysis/analysis_m680x_cs.c	39.42%	51 Missing and 12 partials ⚠️
librz/arch/p/asm/asm_m680x_cs.c	20.00%	0 Missing and 4 partials ⚠️

Additional details and impacted files

Files with missing lines	Coverage Δ
librz/arch/p/asm/asm_m680x_cs.c	46.55% <20.00%> (ø)
librz/arch/p/analysis/analysis_m680x_cs.c	47.95% <39.42%> (+2.50%)	⬆️

... and 9 files with indirect coverage changes

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[historicattle]

@wargio @Rot127 could you take a look at this

[wargio]

extract this function and move it into arch_m680x_cs.c