Manpages: Auto-generate many through ArgsParser

This set was hand-curated, guided by the questions:
- Does it have at least three options, i.e. is the help page
  non-trivial?
- Is the program unusual, i.e. does listing it in Help or on
  man.serenityos.org spread awareness?
- Is the program common, but we only implement a subset of 'common'
  flags?

Base/usr/share/man/man1/shot.md

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+## Name
+
+shot
+
+## Synopsis
+
+```sh
+$ shot [--clipboard] [--delay seconds] [--screen index] [--region] [output]
+```
+
+## Options:
+
+* `--help`: Display help message and exit
+* `--version`: Print version
+* `-c`, `--clipboard`: Output to clipboard
+* `-d seconds`, `--delay seconds`: Seconds to wait before taking a screenshot
+* `-s index`, `--screen index`: The index of the screen (default: -1 for all screens)
+* `-r`, `--region`: Select a region to capture
+
+## Arguments:
+
+* `output`: Output filename
+
+<!-- Auto-generated through ArgsParser -->