[Modular] Makes all techwebs generate points (#314)

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## About The Pull Request
Makes it so that all new techwebs (including the station techweb)
generate points by DEFAULT. This is to make techwebs compatible with
ghost roles making new servers.
Coupled with turning on NO_DEFAULT_TECHWEB_LINK, this will solve ghost
roles being connected to the station research network by default, while
still allowing them to research.
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## Changelog

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🆑
Add: Techwebs generate points by default.
/🆑

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modular_zubbers/code/modules/research/techweb/_techweb.dm

@@ -0,0 +1,2 @@
+/datum/techweb
+	var/should_generate_points = TRUE