[Umbrella][Website][Doc] Remove incubation related content information

[gosonzhang]

Description

Since the project has passed the graduation on June 15th, adjust the content of the project website and remove the incubating-related tags

• [Website] Adjust the footer content of the home page #4703
• [Website] Delete the "incubating" tag contained on the Home page #4704
• [Website] Adjust InLong Team member list #4705
• [Website] Remove the "(incubating)" tag from the project name in the text content #4706
• [Website] Modify the "(incubating)" tag associated with the link #4708
• [Improve][Website] Modify how to release and verify #4710
• [Website] Modify the how-to-vote-a-committer-pmc file #4746
• [Doc] Remove DISCLAIMER file #4717
• [TubeMQ] Remove the "incubat*" tag in the tubemq-go-sdk code #4721
• [Pom] Change version to 1.3.0-SNAPSHOT  #4724
• [Doc] Update InLong project link in readme and pom.xml #4727
• [Doc] Remove "(Incubating)" tag in licenses dirs #4737

[gosonzhang]

Ok, now the code and website have been sorted out, I'll close this issue.

If you find anything missing or needs to be adjusted, please initiate an improvement in the issue, thanks!