add doc

docs/analyze_sql.md

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+## analyze sql
+
+```bash
+$ obdiag analyze sql [options]
+
+Options:
+  --host=HOST          tenant connection host
+  --port=PORT          tenant connection port
+  --password=PASSWORD  tenant connection user password
+  --user=USER          tenant connection user name
+  --from=FROM          specify the start of the time range. format: 'yyyy-mm-
+                       dd hh:mm:ss'
+  --to=TO              specify the end of the time range. format: 'yyyy-mm-dd
+                       hh:mm:ss'
+  --since=SINCE        Specify time range that from 'n' [d]ays, 'n' [h]ours or
+                       'n' [m]inutes. before to now. format: <n> <m|h|d>.
+                       example: 1h.
+  --level=LEVEL        The alarm level, optional parameters [critical, warn,
+                       notice, ok]
+  -c C                 obdiag custom config
+  -h, --help           Show help and exit.
+  -v, --verbose        Activate verbose output.
+```

docs/analyze_sql_review.md

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+## analyze sql_review
+
+```bash
+$ obdiag analyze sql_review [options]
+
+Options:
+  --host=HOST          tenant connection host
+  --port=PORT          tenant connection port
+  --password=PASSWORD  tenant connection user password
+  --user=USER          tenant connection user name
+  --files=FILES        specify files
+  -c C                 obdiag custom config
+  -h, --help           Show help and exit.
+  -v, --verbose        Activate verbose output.
+```