[feature-wip](multi-catalog) support "show proc 'catalogs/'"

[morningman]

Proposed changes

Issue Number: close #xxx

Problem Summary:

1. Support "show proc 'catalogs/'"

2. Refactor some interface implementation of HMSExternalDataSource, HMSExternalDatabase, HMSExternalTable.

   1. The meta instance id(dsId, dbId, tblId) is now generated from Catalog.getNextId()
   2. Each meta instance(ds, db, tbl) will only be created once, so that the id of these instances will not be changed in each call.

3. Remove duplicate interface implementation of DataSourceIf, DatabaseIf.

Checklist(Required)

1. Does it affect the original behavior: (No)
2. Has unit tests been added: (No Need)
3. Has document been added or modified: (No Need)
4. Does it need to update dependencies: (No)
5. Are there any changes that cannot be rolled back: (No)

Further comments

If this is a relatively large or complex change, kick off the discussion at dev@doris.apache.org by explaining why you chose the solution you did and what alternatives you considered, etc...

[morningman]

For reviewer: unify the logic, no need to use a special if branch to handle HMS_EXTERNAL_TABLE

[Jibing-Li]

LGTM

[yiguolei]

LGTM