Hotfix/sangshuduo/td 6294 taosdemo long arg (#7729)

* [TD-6294]<fix>: taosdemo support long arg

fix conflict with develop branch.

* fix few words.

* declare default child tables number.

* add support email prompt.

* support the way no space between param and value

* fix uncatched status.

* fix -PP arg.

* fix total child tables bug.

* fix taosdemo long args bug.

* fix default column number
Co-authored-by: NShuduo Sang <sdsang@taosdata.com>

src/kit/taosdemo/taosdemo.c

@@ -105,7 +105,7 @@ extern char configDir[];
 
 #define DEFAULT_TIMESTAMP_STEP  1
 #define DEFAULT_INTERLACE_ROWS  0
-#define DEFAULT_DATATYPE_NUM    3
+#define DEFAULT_DATATYPE_NUM    1
 #define DEFAULT_CHILDTABLES     10000