[jsk_tool] add open_repo_url

[knorth55]

I add open_repo_url to open package source github from command line.

$ open_repo_url jsk_fetch_startup -r knorth55 -b fetch15
Open https://github.com/knorth55/jsk_robot/tree/fetch15

we need gitpython for this script.

sudo apt install python-git

[knorth55]

@708yamaguchi if you think it is troublesome to open knorth55/jsk_robot:fetch15, just type open_repo_url -r jsk_fetch_startup -b fetch15

[k-okada]

another solution would be...

snap install hub --classic
hub browse knorth55/jsk_robot tree/fetch15
hub browse knorth55/jsk_robot tree/fetch15/jsk_fetch_robot/jsk_fetch_startup

[knorth55]

this command has option to use rosdistro.
we can open the rospackage repo by searching url written in rosdistro.

[k-okada]

hum how can you find knorth55 from rosdistro database?

[knorth55]

the example does not use rosdistro search because the --use-rosdistro flag is not set.