HTML template engine

jrFlint bd52ccf7e7 first 2 lat temu
test bd52ccf7e7 first 2 lat temu
go.mod bd52ccf7e7 first 2 lat temu
go.sum bd52ccf7e7 first 2 lat temu
metla.go bd52ccf7e7 first 2 lat temu
parser.go bd52ccf7e7 first 2 lat temu
z_test.go bd52ccf7e7 first 2 lat temu