log/setup air config for templ

To be able air to work with templ, we need change some configuration in .air.toml

 1# ...
 2
 3# add templ generate
 4cmd = "templ generate && go build -o ./tmp/main ."
 5
 6# ...
 7
 8# add templ generated file in exclude regex
 9exclude_regex = [".*_templ.go"]
10
11# ...
12
13# add file with extension .templ to watched
14include_ext = ["go", "tpl", "tmpl", "templ", "html"]