dependencies: Import urfave/cli/v2 (#5)

This change adds the latest version of `urfave/cli` and its transitive
dependencies to `go.mod` for use in future PRs; it is split from changes
that use it so that the dependency addition can be reviewed in
isolation.

A previous effort was made to import this library into the internal
repository, although this effort imported an old (v1.x) version, and
therefore security reviews on the set of transitive dependencies are
incomplete:

Previously completed security reviews:
-
[github.com/cpuguy83/go-md2man/v2](https://docs.google.com/spreadsheets/d/1v207mMq486sc5043ySIcg8ri-ahP4vFxCOxoMUQnAg4/edit?gid=0#gid=0)
-
[github.com/russross/blackfriday/v2](https://docs.google.com/spreadsheets/d/1FfVS81kN-5XV6yGrcxdRDSZaGAVobG5hADeYh0OqnOE/edit?gid=0#gid=0)
-
[github.com/urfave/cli/v2](https://docs.google.com/spreadsheets/d/1Ag1tcVQbtHIE7xZfAhN1M4d43fBM2sgSt8mG3bfU5_I/edit?gid=0#gid=0)

New security reviews:
-
[github.com/xrash/smetrics](https://docs.google.com/spreadsheets/d/1vR9MFsMDY3wy2MNj9ljwgkuFY8hFYy5d_BxjggQ8FHg/edit?gid=0#gid=0)

Bug: linear/PE-2802

go.mod

@@ -13,10 +13,14 @@ require (
 
 require (
 	github.com/alessio/shellescape v1.4.2 // indirect
+	github.com/cpuguy83/go-md2man/v2 v2.0.4 // indirect
 	github.com/danieljoos/wincred v1.2.0 // indirect
 	github.com/davecgh/go-spew v1.1.1 // indirect
 	github.com/godbus/dbus/v5 v5.1.0 // indirect
 	github.com/pmezard/go-difflib v1.0.0 // indirect
+	github.com/russross/blackfriday/v2 v2.1.0 // indirect
+	github.com/urfave/cli/v2 v2.27.2 // indirect
+	github.com/xrash/smetrics v0.0.0-20240312152122-5f08fbb34913 // indirect
 	golang.org/x/sys v0.8.0 // indirect
 	gopkg.in/yaml.v3 v3.0.1 // indirect
 )

go.sum

@@ -2,6 +2,8 @@ github.com/EngFlow/credential-helper-go v0.0.0-20240531061116-25d7df71cdb6 h1:kf
 github.com/EngFlow/credential-helper-go v0.0.0-20240531061116-25d7df71cdb6/go.mod h1:n8mVwofIoRWjWa+0p/kfKjGo9bHGQb6zfcJuO+Kob6o=
 github.com/alessio/shellescape v1.4.2 h1:MHPfaU+ddJ0/bYWpgIeUnQUqKrlJ1S7BfEYPM4uEoM0=
 github.com/alessio/shellescape v1.4.2/go.mod h1:PZAiSCk0LJaZkiCSkPv8qIobYglO3FPpyFjDCtHLS30=
+github.com/cpuguy83/go-md2man/v2 v2.0.4 h1:wfIWP927BUkWJb2NmU/kNDYIBTh/ziUX91+lVfRxZq4=
+github.com/cpuguy83/go-md2man/v2 v2.0.4/go.mod h1:tgQtvFlXSQOSOSIRvRPT7W67SCa46tRHOmNcaadrF8o=
 github.com/danieljoos/wincred v1.2.0 h1:ozqKHaLK0W/ii4KVbbvluM91W2H3Sh0BncbUNPS7jLE=
 github.com/danieljoos/wincred v1.2.0/go.mod h1:FzQLLMKBFdvu+osBrnFODiv32YGwCfx0SkRa/eYHgec=
 github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
@@ -16,10 +18,16 @@ github.com/google/uuid v1.6.0 h1:NIvaJDMOsjHA8n1jAhLSgzrAzy1Hgr+hNrb57e+94F0=
 github.com/google/uuid v1.6.0/go.mod h1:TIyPZe4MgqvfeYDBFedMoGGpEw/LqOeaOT+nhxU+yHo=
 github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
 github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
+github.com/russross/blackfriday/v2 v2.1.0 h1:JIOH55/0cWyOuilr9/qlrm0BSXldqnqwMsf35Ld67mk=
+github.com/russross/blackfriday/v2 v2.1.0/go.mod h1:+Rmxgy9KzJVeS9/2gXHxylqXiyQDYRxCVz55jmeOWTM=
 github.com/stretchr/objx v0.5.2 h1:xuMeJ0Sdp5ZMRXx/aWO6RZxdr3beISkG5/G/aIRr3pY=
 github.com/stretchr/objx v0.5.2/go.mod h1:FRsXN1f5AsAjCGJKqEizvkpNtU+EGNCLh3NxZ/8L+MA=
 github.com/stretchr/testify v1.9.0 h1:HtqpIVDClZ4nwg75+f6Lvsy/wHu+3BoSGCbBAcpTsTg=
 github.com/stretchr/testify v1.9.0/go.mod h1:r2ic/lqez/lEtzL7wO/rwa5dbSLXVDPFyf8C91i36aY=
+github.com/urfave/cli/v2 v2.27.2 h1:6e0H+AkS+zDckwPCUrZkKX38mRaau4nL2uipkJpbkcI=
+github.com/urfave/cli/v2 v2.27.2/go.mod h1:g0+79LmHHATl7DAcHO99smiR/T7uGLw84w8Y42x+4eM=
+github.com/xrash/smetrics v0.0.0-20240312152122-5f08fbb34913 h1:+qGGcbkzsfDQNPPe9UDgpxAWQrhbbBXOYJFQDq/dtJw=
+github.com/xrash/smetrics v0.0.0-20240312152122-5f08fbb34913/go.mod h1:4aEEwZQutDLsQv2Deui4iYQ6DWTxR14g6m8Wv88+Xqk=
 github.com/zalando/go-keyring v0.2.5 h1:Bc2HHpjALryKD62ppdEzaFG6VxL6Bc+5v0LYpN8Lba8=
 github.com/zalando/go-keyring v0.2.5/go.mod h1:HL4k+OXQfJUWaMnqyuSOc0drfGPX2b51Du6K+MRgZMk=
 golang.org/x/oauth2 v0.20.0 h1:4mQdhULixXKP1rwYBW0vAijoXnkTG0BLCDRzfe1idMo=