Add .gitignore and .ratignore files for various directories

doc/licenses/bouncycastle-1.80/LICENSE

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+Copyright (c) 2000-2024 The Legion of the Bouncy Castle Inc. (https://www.bouncycastle.org).
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sub license, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions: The above copyright
+notice and this permission notice shall be included in all copies or
+substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.

doc/licenses/bouncycastle-1.80/README

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+BouncyCastle Crypto (https://www.bouncycastle.org/java.html)
+------------------------------------------------------------
+
+    Version: 1.80
+    From: 'The Legion of Bouncy Castle' (https://www.bouncycastle.org)
+    License(s):
+        MIT (bundled/bouncycastle-1.80/LICENSE)

doc/licenses/bouncycastle-1.80/dep-coordinates.txt

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+org.bouncycastle:bcpkix-jdk15to18:jar:1.80
+org.bouncycastle:bcprov-jdk15to18:jar:1.80
+org.bouncycastle:bcutil-jdk15to18:jar:1.80