Add ideas for cli relaunch

GCryptCLI/idea/notes.md

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+* Add a new iobase: bytes.
+  For cleartext:
+    Format is ALWAYS raw bytes. That works fine with text, and files.
+    The iobase ONLY affects ciphertext!
+
+  For ciphertext:
+    format depends..:
+
+    If none specified:
+      - raw bytes if an outputfile is given
+      - hex if output to stdout
+
+    If specified:
+      Just use the specified iobase. Even if it means dumping bytes to stdout, or writing base-2 to files.
+
+
+* --intext or --infile should no longer be required. Default behaviour should be reading from stdin.
+* No guessing where to output (like file-in got saved to another file beforehand.) Default behaviour should be stdout.
+
+* --progress should output reports to stderr. This way it won't disturb piping the ciphertext to another program.
+
+* Add a module to generate keyfiles.
+  Should seed a gcrypt prng with std::random_device, and then dump BLOCK_SIZE bits to the specified output.
+