issue-2076: Add refresh rates to xrandr block. (#2223)

* issue-2076: Implement new xrandr output parser with nom. Add support for parsing output refresh rate (v_clock_hz). Add new $refresh_rate placeholder to xrandr block format string.

* issue-2076: Add unit tests for new xrandr parser.

* issue-2076: Fix CI checks.

* issue-2076: Prefer usage of British-spelling.

* issue-2076: Flatten parser::Output into Monitor struct.

Author: zheltikov

cspell.yaml

@@ -5,6 +5,7 @@ ignorePaths:
   - _typos.toml
   - target/
   - src/blocks/weather/met_no_legends.json
+  - testdata/
 ignoreRegExpList:
   # Ignore usernames that are @'d
   - /@[\w-]*/g