feat(mikrotik): structured-output parsing base + validation fix (7/10)

[WilhelmZA]

Summary

Adds the shared MikroTik structured-output parsing base used by both structured BGP and structured traceroute:

• the MikroTik output parser (models/parsing/mikrotik.py),
• an enhanced garbage-output cleaner that handles routing route print detail and MikroTik's redraw-in-place traceroute table,
• a target-normalizer input plugin, and
• registration of mikrotik_routeros / mikrotik_switchos as structured-capable platforms.

Also hardens Device.validate_structured_output: it raised ConfigError with positional arguments (causing a TypeError) instead of the named placeholders the exception expects, so configuring structured_output: true on an unsupported platform now produces the intended ConfigError. Includes a parser unit test built from a real RouterOS 7.x capture.

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Stacked series (7/10). Builds on pr/ip-enrichment-service.

Also fixes (MikroTik output handling)

• Robust MikroTik output cleaning: strips interactive prompts and the flags legend, handles missing fields, and guards against non-string output.
• Deduplicates MikroTik traceroute output (the table is reprinted per probe cycle / redrawn in place).
• Populates the route Originator from the MikroTik belongs-to field.