Rename EntropyMeter -> Estimate

[louib]

The entropy-meter CLI command was lagging behind the other commands in terms of style, interface and documentation.

Description

• renamed entropy-meter to estimate, since all the other commands are verbs
• Used QCommandLineParser for the arguments
• Only allow 1 password (via stdin or CLI arg)
• clang-format the whole cli directory
• Updated the man page.

How has this been tested?

Locally

Screenshots (if appropriate):

$ keepassxc-cli estimate
password
Pass 'password' 	Length 8	Entropy 1.000	Log10 0.301
$ keepassxc-cli estimate password
Pass 'password' 	Length 8	Entropy 1.000	Log10 0.301
$ keepassxc-cli estimate password -a
Pass 'password' 	Length 8	Entropy 1.000	Log10 0.301
  Multi-word extra bits 0.0
  Type: Dictionary       Length 8  Entropy  1.000 (0.30) password
$ keepassxc-cli estimate -a
password
Pass 'password' 	Length 8	Entropy 1.000	Log10 0.301
  Multi-word extra bits 0.0
  Type: Dictionary       Length 8  Entropy  1.000 (0.30) password
$ keepassxc-cli estimate invalid number of args
Usage: ./src/cli/keepassxc-cli estimate [options] [password]
Estimate the entropy of a password.

Options:
  -a, --advanced  Perform advanced analysis on the password.

Arguments:
  password        Password for which to estimate the entropy.

Types of changes

• ✅ Breaking change (fix or feature that would cause existing functionality to change)

Checklist:

• ✅ I have read the CONTRIBUTING document. [REQUIRED]
• ✅ My code follows the code style of this project. [REQUIRED]
• ✅ All new and existing tests passed. [REQUIRED]
• ✅ I have compiled and verified my code with -DWITH_ASAN=ON. [REQUIRED]
• ✅ My change requires a change to the documentation and I have updated it accordingly.

[TheZ3ro]

missing {

[TheZ3ro]

how about args.size() > 1 ?