Add Gradle functionality

What's Changed

• feat(gradle): scaffold module + command wiring + hooks by @Nava2 in #1
• feat(gradle): global noise line filters + config by @Nava2 in #2
• feat(gradle): COMPILE filter + path normalization by @Nava2 in #3
• feat(gradle): DEPS filter — dependency tree depth truncation by @Nava2 in #8
• feat(gradle): TEST filter + stack trace truncation by @Nava2 in #4
• feat(gradle): HEALTH + PROTO filters by @Nava2 in #9
• feat(gradle): DETEKT filter with violation grouping by @Nava2 in #5
• docs: add Gradle commands to README by @Nava2 in #11
• feat(config): repo-level .rtk.toml support by @Nava2 in #12
• feat(gradle): multi-task batch filter by @Nava2 in #10
• fix(gradle): filter stderr through global noise patterns by @Nava2 in #13
• feat(gradle): batch filter + fix duplicate output by @Nava2 in #16
• fix(gradle): strip --quiet/-q to ensure parseable output by @Nava2 in #17
• chore: tag version as 0.29.0-faire by @Nava2 in #18
• chore: merge upstream rtk-ai/rtk v0.30.0 by @Nava2 in #19
• fix: upstream alignment for gradle PR readiness by @Nava2 in #22
• fix(gradle): deduplicate --console plain when user passes it explicitly by @Nava2 in #43

New Contributors

• @Nava2 made their first contribution in #1

Full Changelog: https://github.com/Faire/rtk/commits/0.30.0-faire