47f50c7af5572520fd986b313a63a44a76d3c859 doc: add bitcoin-qt man description (willcl-ark)
40b82e3ab0a1889ddb816ca66f80512bdba93ef6 doc: add bitcoin-util man description (willcl-ark)
a7bf80f3a2db17ca6cbbaf45c49fbd6011633fa5 doc: add bitcoin-tx man description (willcl-ark)
3f9a5168323070a18b6c8b7bffeafe1d2965f50b doc: add bitcoin-wallet man description (willcl-ark)
d8c0bb23ef83f207394a3f714f4498ab8abf88c1 doc: add bitcoin-cli man description (willcl-ark)
09abccfa7729b53d057c9c0a7836367d6cc0233d doc: add bitcoind man description (willcl-ark)
Pull request description:
Closes#29552
Add better descriptions to help string for all binaries. Use format which is correctly detected by help2man when generating manpages.
Examples:
Before:

After:

Demonstration using `bitcoin-cli` also highlights removal of inline usage explanations which were being incorrectly formatted by `help2man`. This results in the following changed format to `bitcoin-cli --help`:

ACKs for top commit:
achow101:
ACK 47f50c7af5572520fd986b313a63a44a76d3c859
tdb3:
re ACK 47f50c7af5572520fd986b313a63a44a76d3c859
rkrux:
tACK 47f50c7af5572520fd986b313a63a44a76d3c859
maflcko:
ACK 47f50c7af5572520fd986b313a63a44a76d3c859 📠
Tree-SHA512: 124a8877077b7d47758ea970949d472b2444e3ba65d2bfeb47ebbdb1f5f8d3bf0abe2c88714bb6c92ba0e36583f0b36aa6f016ea88b65f011c610096ea872182