support uuid type for "into outfile" clause

Approved by: @yingfeng, @fengttt, @daviszhen, @aressu1985

1, fix compound privilege;
2,add restriction for catalog;
3,add privilege check for PREPARE;
4,add coverage bvt cases for basic privilege;

Approved by: @aressu1985, @yingfeng, @fengttt

- support FileService do Write CSV data
- init schema support CVS params, in `pkg/util/metric/metric.go`, `pkg/util/trace/schema.go`
- adapt config[fileservice] to get stringwriter obj, in `pkg/util/export/fs_writer.go`
- add [cn.fileservice] in cn-service.toml
- add [[fileservice]] in log-service.toml
- mo-service support metric/trace/log/... collection,  in `pkg/cnservice/server.go`, `pkg/dnservice/store.go`, `pkg/logservice/service.go`

Approved by: @yingfeng, @daviszhen, @aptend, @fengttt, @reusee, @cnutshell, @zhangxu19830126, @lni

1. Connect the cn-service with the frontend and the computation engine.
2. Change the configuraion mechanism to the general method. Remove the auto-generated configuration.

Approved by: @zhangxu19830126, @yingfeng, @fengttt, @aptend, @reusee, @nnsgmsone, @lni

When dns names are used in the GossipSeedAddresses field of logservice.Config, mo-service will try to resolve them and pass them to the logservice as a slice of strings in ip:port format. Only IPv4 addresses are kept and ErrInvalidConfig is returned if any dns name is mapped to more than one IPv4 address.

Approved by: @reusee

use []string in toml files, no more semicoln separated strings

remove the HAKeeperReplicaID field in bootstrap config

* Adding decNumber library.

* Work on decimal and rebase.

I will be damned if it works at all.

* Pass ut.

* Will never pass bvt.

* Fixes.

* Missed a few UT cases.

I cheated on a parser case.   Decimal will output 100 as 1E+2.
I think we can accept this.

* Use PRId64 and PRIu64 in printf.

* Minor clean up.

* CI

added -ldecnumber, removed pdf file.

* Fix a static check error.

* add built-in string function bin

* refine test codes for bin func

* refine: use bit operations instead of strconv.FormatUint

* update cubeKV

* update vet

* code refactor: implicit type conversion adapt to built-in functions

* fix a bug

* change init funciton place of package overload

Signed-off-by: jinhai <haijin.chn@gmail.com>

Fix issue#1310, add two files pkg/config/system_vars.go pkg/config/system_vars_test.go to gitignore (#1316)

Signed-off-by: jinhai <haijin.chn@gmail.com>

Signed-off-by: jinhai <haijin.chn@gmail.com>

* Add IOPackage module. buffering and byte order need to be tuned;

* Add mysql client protocol.

* Make mysql client protocol works

* Add configuration related operation interface

* The configuration works

* Add ast transformer

* Add expression and selectstmt transformer

* Remove useless directories(types,session,sessionctx,util); change Subquery,TableExpr; add CaseExpr; add IntervalExpr; add IsTruthExpr; add DefaultVal; add Union Clause; add Insert Statement; “

* Fix decimal; add CreateTable

* Add origString for NumVal

* Fix decimal null value

* Rm some useless code

* Try to connect the frontend with the computation engine with the fake storage engine and the fake nodes

* The frontend are connected with the computation engine

* Fix parallel pipeline problem;
add DropTable, CreateDatabase, DropDatabase, Insert, Delete, Update,
LoadData, Begin, Commit , Rollback, Set(partial), Show(partial), Explain(partial), Use

* Fix incomplete data type

* Remove dump thing

* Update .gitignore

Co-authored-by: Yingfeng <yingfeng.zhang@gmail.com>

Signed-off-by: jinhai <haijin.chn@gmail.com>

Signed-off-by: jinhai <haijin.chn@gmail.com>