Add icons for silencing

Signed-off-by: Šimon Brandner <simon.bra.ag@gmail.com>

res/img/voip/silence.svg

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+<svg width="16" height="16" viewBox="0 0 16 16" fill="none" xmlns="http://www.w3.org/2000/svg">
+<path fill-rule="evenodd" clip-rule="evenodd" d="M7.56986 1.82566L4 4.80054L1.5 4.80054C0.671573 4.80054 0 5.47212 0 6.30054V9.70054C0 10.529 0.671573 11.2005 1.5 11.2005L4 11.2005L7.56986 14.1754C8.05836 14.5825 8.8 14.2351 8.8 13.5993L8.8 9.70054V6.30054L8.8 2.40182C8.8 1.76595 8.05836 1.41858 7.56986 1.82566ZM14.1546 2.76877C13.9162 2.46224 13.4745 2.40702 13.1679 2.64543L13.0443 3.6318L13.0446 3.63212L13.0448 3.63238L13.0536 3.64417C13.0623 3.65582 13.0764 3.67498 13.0951 3.7013C13.1325 3.75399 13.1883 3.83518 13.2564 3.94222C13.3929 4.15668 13.5774 4.47271 13.7624 4.86922C14.1345 5.66647 14.4965 6.763 14.4965 8.00044C14.4965 9.23789 14.1345 10.3344 13.7624 11.1317C13.5774 11.5282 13.3929 11.8442 13.2564 12.0587C13.1883 12.1657 13.1325 12.2469 13.0951 12.2996C13.0764 12.3259 13.0623 12.3451 13.0536 12.3567L13.0448 12.3685L13.0446 12.3688L13.0443 12.3691L13.0441 12.3694L13.0438 12.3698L13.0436 12.37C12.8063 12.6765 12.8618 13.1174 13.1679 13.3555C13.4745 13.5939 13.9162 13.5386 14.1546 13.2321L13.5996 12.8004C14.1546 13.2321 14.1548 13.2319 14.1549 13.2317L14.1552 13.2313L14.156 13.2303L14.158 13.2278L14.1636 13.2204L14.1815 13.1966C14.1963 13.1768 14.2166 13.1491 14.2416 13.1138C14.2917 13.0433 14.3609 12.9423 14.4428 12.8136C14.6063 12.5567 14.8218 12.187 15.0368 11.7264C15.4647 10.8093 15.9027 9.50586 15.9027 8.00044C15.9027 6.49503 15.4647 5.19156 15.0368 4.27453C14.8218 3.8139 14.6063 3.44421 14.4428 3.18724C14.3609 3.05857 14.2917 2.95762 14.2416 2.88709C14.2166 2.8518 14.1963 2.82408 14.1815 2.80426L14.1636 2.78048L14.158 2.7731L14.156 2.77055L14.1552 2.76956L14.1549 2.76914C14.1548 2.76895 14.1546 2.76877 13.5996 3.20045L14.1546 2.76877ZM11.7552 5.16879C11.5168 4.86227 11.075 4.80705 10.7685 5.04546C10.4628 5.28321 10.4071 5.72319 10.6432 6.02961L10.6452 6.03231C10.6481 6.03609 10.6535 6.04353 10.6613 6.05445C10.6768 6.07633 10.7014 6.11199 10.732 6.1601C10.7935 6.2567 10.878 6.4013 10.963 6.58353C11.1351 6.95221 11.2971 7.44874 11.2971 8.00047C11.2971 8.5522 11.1351 9.04873 10.963 9.41741C10.878 9.59964 10.7935 9.74424 10.732 9.84084C10.7014 9.88895 10.6768 9.92461 10.6613 9.94648C10.6535 9.95741 10.6481 9.96484 10.6452 9.96863L10.6432 9.97132C10.4071 10.2777 10.4628 10.7177 10.7685 10.9555C11.075 11.1939 11.5168 11.1387 11.7552 10.8321L11.2002 10.4005C11.7552 10.8321 11.7553 10.832 11.7555 10.8318L11.7558 10.8314L11.7564 10.8305L11.758 10.8286L11.7619 10.8234L11.7731 10.8085C11.782 10.7966 11.7937 10.7806 11.8078 10.7607C11.8361 10.721 11.874 10.6656 11.9184 10.5958C12.0069 10.4567 12.1224 10.2584 12.2374 10.0121C12.4653 9.52364 12.7033 8.82017 12.7033 8.00047C12.7033 7.18077 12.4653 6.4773 12.2374 5.98884C12.1224 5.74249 12.0069 5.54424 11.9184 5.40512C11.874 5.33538 11.8361 5.27996 11.8078 5.24023C11.7937 5.22035 11.782 5.20435 11.7731 5.1924L11.7619 5.17752L11.758 5.17238L11.7564 5.17039L11.7558 5.16954L11.7555 5.16916C11.7553 5.16897 11.7552 5.16879 11.2002 5.60047L11.7552 5.16879Z" fill="#8D99A5"/>
+</svg>

res/img/voip/un-silence.svg

@@ -0,0 +1,4 @@
+<svg width="16" height="16" viewBox="0 0 16 16" fill="none" xmlns="http://www.w3.org/2000/svg">
+<path d="M1.18262 0.960693L14.3815 14.1596" stroke="#8D99A5" stroke-width="1.61751" stroke-miterlimit="10" stroke-linecap="round"/>
+<path fill-rule="evenodd" clip-rule="evenodd" d="M5.57061 4.20635L5.19539 4.51904H3.58059L10.2419 11.1804V8.87764L5.57061 4.20635ZM10.2419 6.59013V2.15546C10.2419 1.42405 9.38884 1.0245 8.82695 1.49274L6.81834 3.16658L10.2419 6.59013ZM5.19526 11.2479H2.7146C1.76172 11.2479 0.989258 10.4754 0.989258 9.52254V6.24438C0.989258 5.69051 1.25024 5.1976 1.65595 4.88191L10.2419 13.4679V13.6117C10.2419 14.3431 9.38884 14.7426 8.82695 14.2744L5.19526 11.248V11.2479Z" fill="#8D99A5"/>
+</svg>