Add a template for WPA2-TTLS, which is notably used by Eduroam.

--- a/encryption/templates/active
+++ b/encryption/templates/active
@@ -4,6 +4,7 @@ wpa-psk
 wpa-psk-hex
 wpa2-leap
 wpa2-peap
+wpa2-ttls
 wep-hex
 wep-passphrase
 wep-shared
diff --git a/encryption/templates/wpa2-ttls b/encryption/templates/wpa2-ttls
new file mode 100644
index 0000000..4f66a1e
--- /dev/null
+++ b/encryption/templates/wpa2-ttls
@@ -0,0 +1,20 @@
+name = WPA2-TTLS (used notably by Eduroam)
+author = various contributors
+version = 1
+require identity *Identity anonymous_identity *Anonymous_identity password *Password ca_cert *Path_to_CA_Cert
+protected password *Password
+-----
+ctrl_interface=/var/run/wpa_supplicant
+network={
+        ssid="$_ESSID"
+        scan_ssid=$_SCAN
+        proto=WPA2
+        key_mgmt=WPA-EAP
+        group=CCMP TKIP
+        eap=TTLS
+        identity="$_IDENTITY"
+        password="$_PASSWORD"
+        anonymous_identity="$_ANONYMOUS_IDENTITY"
+        ca_cert="$_CA_CERT"
+        phase2="auth=PAP"
+}
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<tr><td><span title='2022-11-22 08:37:26 +0100'>2022-11-22</span></td><td><a href='/guix/commit/gnu/packages/debug.scm?id=859a10a47d624167cc2fc603a4bf0c8d618fc9a8'>gnu: remake: Update to 4.3-1.6.</a><span class='msg-avail'>...</span></td><td>Marius Bakke</td></tr>
<tr><td><span title='2022-10-28 21:55:39 +0200'>2022-10-28</span></td><td><a href='/guix/commit/gnu/packages/debug.scm?id=0a604c16b34f8147bf18e065e8b30d8d23cd8998'>gnu: Add seer-gdb.</a><span class='msg-avail'>...</span></td><td>Danny Milosavljevic</td></tr>
<tr><td><span title='2022-08-29 18:22:58 +0200'>2022-08-29</span></td><td><a href='/guix/commit/gnu/packages/debug.scm?id=ed9558b17a720bef7a91a5afd3b49380717a73ea'>gnu: rr: Update to 5.6.0.</a><span class='msg-avail'>...</span></td><td>Michael Rohleder</td></tr>
<tr><td><span title='2022-03-06 22:49:47 +0100'>2022-03-06</span></td><td><a href='/guix/commit/gnu/packages/debug.scm?id=df1959277c714e42a0bf286d51df0a084a6420e9'>gnu: cgdb: Reference gdb.</a><span class='msg-avail'>...</span></td><td>Chadwain Holness</td></tr>