From: ZheNing Hu <adlternative@gmail.com>

Adds a context menu for tag icons with commands similar to what
exits for branches: "Rename this tag", "Remove this tag",
"Copy tag name".

Signed-off-by: ZheNing Hu <adlternative@gmail.com>

Submitted-As: https://lore.kernel.org/git/pull.866.v5.git.1614227923637.gitgitgadget@gmail.com
In-Reply-To: https://lore.kernel.org/git/pull.866.git.1612426689172.gitgitgadget@gmail.com
In-Reply-To: https://lore.kernel.org/git/pull.866.v2.git.1613483622881.gitgitgadget@gmail.com
In-Reply-To: https://lore.kernel.org/git/pull.866.v3.git.1613663704128.gitgitgadget@gmail.com
In-Reply-To: https://lore.kernel.org/git/pull.866.v4.git.1614164317030.gitgitgadget@gmail.com