Merge branch 'main' into release

Change-Id: Idf074f9c9e698eb99e77e7d24b3b14e76db73eb2

Fix duplicate launcher icon issue

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Merge pull request lihenggui#67 from linsui/fastlane

add fastlane for F-Droid

Merge pull request lihenggui#61 from lihenggui/online_search

Alpha version: Online general rules

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Merge pull request lihenggui#57 from lihenggui/sword

Implement advanced search

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