Move pages under tldr, lint run.sh, update docs

tldr/install-tl

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+---
+syntax: markdown
+tags: [tldr, common]
+source: https://github.com/tldr-pages/tldr.git
+---
+# install-tl
+
+> TeX Live cross-platform installer.
+> More information: <https://tug.org/texlive/>.
+
+- Start the text-based installer (default on Unix systems):
+
+`install-tl -no-gui`
+
+- Start the GUI installer (default on macOS and Windows, requires Tcl/Tk):
+
+`install-tl -gui`
+
+- Install TeX Live as defined in a specific profile file:
+
+`install-tl -profile {{path/to/texlive.profile}}`
+
+- Start the installer with the settings from a specific profile file:
+
+`install-tl -init-from-file {{path/to/texlive.profile}}`
+
+- Start the installer for installation on a portable device, like a USB stick:
+
+`install-tl -portable`
+
+- Display help:
+
+`install-tl -help`