bash-it: add page (#7752)

pages/common/bash-it.md

@@ -0,0 +1,32 @@
+# bash-it
+
+> A collection of community contributed Bash commands and scripts for Bash 3.2+.
+> More information: <https://bash-it.readthedocs.io/en/latest/>.
+
+- Update Bash-it to the latest stable/development version:
+
+`bash-it update {{stable|dev}}`
+
+- Reload Bash profile (set `BASH_IT_AUTOMATIC_RELOAD_AFTER_CONFIG_CHANGE` to non-empty value for an automatic reload):
+
+`bash-it reload`
+
+- Restart Bash:
+
+`bash-it restart`
+
+- Reload Bash profile with enabled error and warning logging:
+
+`bash-it doctor`
+
+- Reload Bash profile with enabled error/warning/entire logging:
+
+`bash-it doctor {{errors|warnings|all}}`
+
+- Search for Bash-it aliases/plugins/completions:
+
+`bash-it search {{alias|plugin|completion}}`
+
+- Search for Bash-it aliases/plugins/completions and enable/disable all found items:
+
+`bash-it search --{{enable|disable}} {{alias|plugin|completion}}`