New app: Select Text to Search

• The app complies with the inclusion criteria: Yes.
• The original app author has been notified (and does not oppose the inclusion): Yes, that's me.
• All related fdroiddata and RFP issues have been referenced in this merge request: N/A.
• The upstream app source code repo contains the app metadata (summary/description/images/changelog/etc) in a Fastlane or Triple-T folder structure: Yes, in a Fastlane directory structure.
• Builds with fdroid build: https://gitlab.com/zhanghai/fdroiddata/-/pipelines/331258513
• Releases are tagged: Yes.

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