Initial import project README and LICENSE

Signed-off-by: Andreas Strobl <astroblx@asgraphics.at>

Author: astrobl1904

LICENSE

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+ISC License
+
+Copyright (c) 2022 Andreas Strobl
+
+Permission to use, copy, modify, and/or distribute this software for any
+purpose with or without fee is hereby granted, provided that the above
+copyright notice and this permission notice appear in all copies.
+
+THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES WITH
+REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
+AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT,
+INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
+LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR
+OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
+PERFORMANCE OF THIS SOFTWARE.

README

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+# prtg-pythonscriptadvanced-starttls_certificate_sensor
+
+This repository contains the sources of a PRTG Python Script Advanced sensor to monitor SSL Certificates of a SSL/TLS secured connections which require STARTTLS to initialize a secure channel.
+
+## Sensor Summary
+
+    Script Language: Python 3.7+
+    Version: 0.1.0
+    Author: Andreas Strobl <astroblx@asgraphics.at>
+    Dependencies: cryptography >=37.0.0
+
+## Sensor Description
+
+This custom _Python Script Advanced_ sensor will monitor SSL certificates and contains channels similar to the PRTG's built-in _SSL Certificate_ sensor.